…#13186)

flutter/flutter@5fc3468...abaf9c5

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…tap-to-select animation (#13012)

Tapping an item that isn't centred starts a 300 ms tap-to-select animation, which `_CupertinoPickerState._handleChildTap` awaits and then reads `_effectiveController.selectedItem`. If the picker is disposed before that animation finishes, the controller has already been detached, so the read fails: an assertion in debug (`FixedExtentScrollController.selectedItem cannot be accessed before a scroll view is built with it.`) and `StateError: Bad state: No element` in release.

It shows up in ordinary "select, then hide" patterns — a parent that removes the picker as soon as a value changes, or a Material bottom sheet (200 ms exit) popped right after a tap. The reporter's analysis in the issue pinned it to this exact line and supplied a deterministic reproduction; credit to them.

The fix returns early after the `await` when the state is no longer mounted. Nothing after that point matters for a disposed picker — it only restores haptic bookkeeping.

The new test taps an off-centre item, removes the picker 50 ms into the animation, and pumps past the end. It fails on `main` with the assertion above and passes with the fix. The rest of `picker_test.dart` (28) and `date_picker_test.dart` (85), which covers the pickers built on top of `CupertinoPicker`, pass as well.

Fixes flutter/flutter#192135

## Pre-Review Checklist

I used AI tooling while working on this, and reviewed and tested all of it myself.

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This is my attempt to handle flutter/flutter#6537 for the following widgets:
ButtonBar
MaterialButton
RawMaterialButton
FilterChip
MergeableMaterial

…tion overflow (#12737)

Port of flutter/flutter#181959 to `flutter/packages` as part of the Material decoupling effort (flutter/flutter#188444).

Ensure textScalling is taken into account for Sizing overflow.

Fixes flutter/flutter#192232
Fixes flutter/flutter#181959
Part of flutter/flutter#188444

### Description
- Ensure textScalling is taken into account for Sizing overflow: passes `MediaQuery.textScalerOf(context)` to `actionTextPainter` so that `actionAndIconWidth` properly scales with accessibility text scaling.
- Removes `SizedBox(width: snackBarWidth * 0.4)` when the action overflows, eliminating unintended blank space on the right of multi-line content.
- Adds unit tests in `snack_bar_test.dart` verifying `textScaler` overflow calculation and layout.
- Adds pending changelog entry.

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Platform interface portion of #12374, split out per the [federated plugin process](https://github.com/flutter/flutter/blob/master/docs/ecosystem/contributing/README.md#changing-federated-plugins) now that the combined PR is approved. No changes from what was reviewed there.

Adds two methods to `CameraPlatform`, with `false` / no-op defaults:

```dart
Future<bool> isZeroShutterLagSupported(int cameraId);
Future<void> setZeroShutterLagEnabled(int cameraId, bool enabled);
```

Part of flutter/flutter#190598

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#13025)

[vector_graphics_compiler] Support SVG alpha masks (`mask-type="alpha"`)

Fixes flutter/flutter#158734

This PR adds support for SVG alpha masks (`mask-type="alpha"` and `style="mask-type: alpha"`) in `vector_graphics_compiler`, split out from #11909 per review feedback.

### Summary of Changes
* **SVG Parser & AST (`vector_graphics_compiler`)**:
  * Parses the `mask-type` attribute (and inline `style="mask-type: ..."` property) on `<mask>` elements in `SvgParser`.
  * Propagates `isAlphaMask` through `ResolvedMaskNode` and `MaskNode`.
  * Emits `BlendMode.dstIn` for alpha masks instead of `BlendMode.srcIn` with a luminance-to-alpha color filter matrix (`BlendMode.modulate`).
* **MaskingOptimizer Compatibility**:
  * Updates `MaskingOptimizer` so single-path masks using gradients with translucent stops (`stop-opacity < 1.0`) are preserved rather than replaced with solid geometry intersection (which previously discarded the gradient's alpha channel).

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TAG=agy
CONV=1bad96cc-81aa-438f-98f6-cb909289144a

Converts `google_sign_in_android` native unit tests from Java to Kotlin.

Similar to my other conversions, the process was:
- Use the Android Studio deterministic auto-conversion.
- Do a bunch of manual cleanup, as separate commits by topic.
  - This included adopting `mockito-kotlin` to make the mocking much less verbose and complex
- Do a local Gemini review for where the code could be improved as Kotlin code, and address most of that feedback.

This also removes the test-only bridge code that allowed using `Result` in Java tests, now that it is no longer necessary.

Does not include any changes to production code.

Part of flutter/flutter#188630

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…ge minimum iOS 13 and macOS 10.15 (#13217)

iOS 13 and macOS 10.15 are always available:
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Remove old availability checks.

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Clarifies that `Slider.label` can be displayed for continuous sliders when the value indicator configuration allows it. Documents the discrete-slider default, widget-level settings for continuous sliders, and the fallback to `SliderThemeData.showValueIndicator`.

Fixes flutter/flutter#74098.

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