RenderTwoDimensionalViewport.buildOrObtainChildFor throws assertion failure for a valid vicinity

### Steps to reproduce

1. Run the example
2. Press on FAB
3. Press again on FAB

### Expected results

You should see the initial widgets on screen since pressing on FAB for second time returns to the initial state.

### Actual results

Nothing renders on screen and you'll get an exception log in console due to assertion failure in `RenderTwoDimensionalViewport.parentDataOf`

### Code sample

<details open><summary>Code sample</summary>

https://dartpad.dev/?id=2c4cc823007d1dc0a9727be611e62f2c

</details>

### Logs

<details open><summary>Logs</summary>

```console
════════ Exception caught by rendering library ═════════════════════════════════
The following assertion was thrown during performLayout():
'package:flutter/src/widgets/two_dimensional_viewport.dart': Failed assertion: line 783 pos 12: '_children.containsValue(child)': is not true.

Either the assertion indicates an error in the framework itself, or we should provide substantially more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
  https://github.com/flutter/flutter/issues/new?template=2_bug.yml

The relevant error-causing widget was:
    TwoDimensionalGridViewport TwoDimensionalGridViewport:file:///main.dart:127:12

When the exception was thrown, this was the stack:
#2      RenderTwoDimensionalViewport.parentDataOf (package:flutter/src/widgets/two_dimensional_viewport.dart:783:12)
#3      RenderTwoDimensionalViewport._moveChild (package:flutter/src/widgets/two_dimensional_viewport.dart:1630:62)
#4      _TwoDimensionalViewportElement.moveRenderObjectChild (package:flutter/src/widgets/two_dimensional_viewport.dart:265:18)
#5      RenderObjectElement.updateSlot (package:flutter/src/widgets/framework.dart:6542:35)
#6      Element.updateSlotForChild.visit (package:flutter/src/widgets/framework.dart:4153:15)
#7      Element.updateSlotForChild.visit (package:flutter/src/widgets/framework.dart:4156:9)
#8      Element.updateSlotForChild.visit (package:flutter/src/widgets/framework.dart:4156:9)
#9      Element.updateSlotForChild.visit (package:flutter/src/widgets/framework.dart:4156:9)
#10     Element.updateSlotForChild (package:flutter/src/widgets/framework.dart:4159:5)
#11     Element.updateChild (package:flutter/src/widgets/framework.dart:3799:11)
#12     _TwoDimensionalViewportElement._buildChild.<anonymous closure> (package:flutter/src/widgets/two_dimensional_viewport.dart:313:33)
#13     BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2835:19)
#14     _TwoDimensionalViewportElement._buildChild (package:flutter/src/widgets/two_dimensional_viewport.dart:307:12)
#15     RenderTwoDimensionalViewport.buildOrObtainChildFor.<anonymous closure> (package:flutter/src/widgets/two_dimensional_viewport.dart:1427:23)
#16     RenderObject.invokeLayoutCallback.<anonymous closure> (package:flutter/src/rendering/object.dart:2657:59)
#17     PipelineOwner._enableMutationsToDirtySubtrees (package:flutter/src/rendering/object.dart:1071:15)
#18     RenderObject.invokeLayoutCallback (package:flutter/src/rendering/object.dart:2657:14)
#19     RenderTwoDimensionalViewport.buildOrObtainChildFor (package:flutter/src/widgets/two_dimensional_viewport.dart:1426:7)
#20     RenderTwoDimensionalGridViewport.layoutChildSequence (package:example/main.dart:227:34)
#21     RenderTwoDimensionalViewport.performLayout (package:flutter/src/widgets/two_dimensional_viewport.dart:1252:5)
#22     RenderObject._layoutWithoutResize (package:flutter/src/rendering/object.dart:2385:7)
#23     PipelineOwner.flushLayout (package:flutter/src/rendering/object.dart:1025:18)
#24     PipelineOwner.flushLayout (package:flutter/src/rendering/object.dart:1038:15)
#25     RendererBinding.drawFrame (package:flutter/src/rendering/binding.dart:591:23)
#26     WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:986:13)
#27     RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:457:5)
#28     SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1325:15)
#29     SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1255:9)
#30     SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:1113:5)
#31     _invoke (dart:ui/hooks.dart:312:13)
#32     PlatformDispatcher._drawFrame (dart:ui/platform_dispatcher.dart:383:5)
#33     _drawFrame (dart:ui/hooks.dart:283:31)
(elided 2 frames from class _AssertionError)

The following RenderObject was being processed when the exception was fired: RenderTwoDimensionalGridViewport#9d954 NEEDS-LAYOUT
    needs compositing
    parentData: <none> (can use size)
    constraints: BoxConstraints(0.0<=w<=984.0, 0.0<=h<=691.0)
    layer: OffsetLayer#dc1bd
        engine layer: OffsetEngineLayer#3c122
        handles: 2
        offset: Offset(0.0, 56.0)
    size: Size(984.0, 691.0)
    (xIndex: 1, yIndex: 1): RenderRepaintBoundary#71f4f NEEDS-PAINT
        needs compositing
        parentData: vicinity=(xIndex: 1, yIndex: 1); layoutOffset=Offset(200.0, 200.0); paintOffset=Offset(0.0, 0.0); visible - paintExtent=Size(200.0, 200.0);
        constraints: BoxConstraints(0.0<=w<=984.0, 0.0<=h<=691.0)
        layer: OffsetLayer#8295b
            engine layer: OffsetEngineLayer#415f8
            handles: 2
            offset: Offset(0.0, 0.0)
        size: Size(200.0, 200.0)
        metrics: 66.7% useful (1 bad vs 2 good)
        diagnosis: insufficient data to draw conclusion (less than five repaints)
        child: RenderConstrainedBox#f153a relayoutBoundary=up1 NEEDS-PAINT
            parentData: <none> (can use size)
            constraints: BoxConstraints(0.0<=w<=984.0, 0.0<=h<=691.0)
            size: Size(200.0, 200.0)
            additionalConstraints: BoxConstraints(w=200.0, h=200.0)
            child: _RenderColoredBox#e6003 NEEDS-PAINT
                parentData: <none> (can use size)
                constraints: BoxConstraints(w=200.0, h=200.0)
                size: Size(200.0, 200.0)
                behavior: opaque
                child: RenderPositionedBox#d4659
                    parentData: <none> (can use size)
                    constraints: BoxConstraints(w=200.0, h=200.0)
                    size: Size(200.0, 200.0)
                    alignment: Alignment.center
                    textDirection: ltr
                    widthFactor: expand
                    heightFactor: expand
RenderObject: RenderTwoDimensionalGridViewport#9d954 NEEDS-LAYOUT
    needs compositing
    parentData: <none> (can use size)
    constraints: BoxConstraints(0.0<=w<=984.0, 0.0<=h<=691.0)
    layer: OffsetLayer#dc1bd
        engine layer: OffsetEngineLayer#3c122
        handles: 2
        offset: Offset(0.0, 56.0)
    size: Size(984.0, 691.0)
    (xIndex: 1, yIndex: 1): RenderRepaintBoundary#71f4f NEEDS-PAINT
        needs compositing
        parentData: vicinity=(xIndex: 1, yIndex: 1); layoutOffset=Offset(200.0, 200.0); paintOffset=Offset(0.0, 0.0); visible - paintExtent=Size(200.0, 200.0);
        constraints: BoxConstraints(0.0<=w<=984.0, 0.0<=h<=691.0)
        layer: OffsetLayer#8295b
            engine layer: OffsetEngineLayer#415f8
            handles: 2
            offset: Offset(0.0, 0.0)
        size: Size(200.0, 200.0)
        metrics: 66.7% useful (1 bad vs 2 good)
        diagnosis: insufficient data to draw conclusion (less than five repaints)
        child: RenderConstrainedBox#f153a relayoutBoundary=up1 NEEDS-PAINT
            parentData: <none> (can use size)
            constraints: BoxConstraints(0.0<=w<=984.0, 0.0<=h<=691.0)
            size: Size(200.0, 200.0)
            additionalConstraints: BoxConstraints(w=200.0, h=200.0)
            child: _RenderColoredBox#e6003 NEEDS-PAINT
                parentData: <none> (can use size)
                constraints: BoxConstraints(w=200.0, h=200.0)
                size: Size(200.0, 200.0)
                behavior: opaque
                child: RenderPositionedBox#d4659
                    parentData: <none> (can use size)
                    constraints: BoxConstraints(w=200.0, h=200.0)
                    size: Size(200.0, 200.0)
                    alignment: Alignment.center
                    textDirection: ltr
                    widthFactor: expand
                    heightFactor: expand
════════════════════════════════════════════════════════════════════════════════
```

</details>


### Flutter Doctor output

<details open><summary>Doctor output</summary>

```console
[✓] Flutter (Channel stable, 3.16.1, on macOS 14.2.1 23C71 darwin-arm64, locale
    en-US)
    • Flutter version 3.16.1 on channel stable at /flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 7f20e5d18c (6 weeks ago), 2023-11-27 09:47:30 -0800
    • Engine revision 22b600f240
    • Dart version 3.2.1
    • DevTools version 2.28.3
```

</details>


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RenderTwoDimensionalViewport.buildOrObtainChildFor throws assertion failure for a valid vicinity #141101

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RenderTwoDimensionalViewport.buildOrObtainChildFor throws assertion failure for a valid vicinity #141101

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