Note: this PR attempts to use the same strategy from the Google Maps Flutter Web PR #10562 and apply it to Google Maps Flutter Android.

## Summary
- Adds batch `addItems()` and `removeItems()` methods to `ClusterManagersController`
- Refactors `MarkersController` to batch add/remove/change operations for clustered markers
- Reduces redundant re-clustering calls when multiple markers are added/removed/changed at once

This improves performance when working with large numbers of clustered markers by calling `ClusterManager.cluster()` once per cluster manager instead of once per marker.

## Test plan
- Added unit tests for batch add/remove operations
- Added unit test for batch cluster manager changes
- Existing tests pass

Addresses flutter/flutter#170573

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…11279)

Web portion of #10471, incorporating review feedback and some other minor cleanup.

Part of flutter/flutter#176445

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…#11285)

flutter/flutter@ff37bef...2c9eb20

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…ackages/interactive_media_ads/android (#11255)

Bumps androidx.core:core-ktx from 1.13.0 to 1.18.0.

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…ges/local_auth/local_auth_android/android (#11256)

Bumps androidx.core:core from 1.17.0 to 1.18.0.

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…e a weak reference to the native view (#11175)

Updates `PlatformViewImpl` to only store a weak reference to the native view. This [issue](flutter/flutter#168535) seems to indicate the `PlatformViewsController` is keeping a reference to the native view even after it is removed from the `InstanceManager` in `webview_flutter_wkwebview`. This change should allow the pigeon call to happen when the reference to the Dart instance is deallocated. This should be safe because if the Dart instance is deallocated, then the Widget tree should no longer contain the PlatformView. And therefore the native UIView should no longer need to be used. Nor any callbacks that need the `UIView` since it is not on screen.

Potential fix for flutter/flutter#168535, but should still update engine to notify plugins that they are detached before setting `PlatformViewsController` to nil.

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…11280)

App-facing portion of #10471, incorporating review feedback and some other minor cleanup.

Fixes flutter/flutter#176445

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)

Following up from #11127, this is the initial example of converting a plugin build, rather than an example app build, to Kotlin gradle.

This conversion was done manually, but closely referencing the current plugin template files. It differs mostly in not having the parts that are specific to the use of Kotlin source files, since `local_auth` is still Java-only. Later (when we start adopting Kotlin Pigeon generation everywhere, for instance) some of the diffs relative to the template files will go away.

Unlike #11127 this did not require tool changes, as it turns out that the previous changes were enough to handle these files, but I did add more tests. As with #11127 I did not attempt to comprehensively duplicate all Groovy tests, since we should be able to relatively quickly convert everything in the repo, and then pull out the Groovy support and update all the tests to Kotlin.

Note that this does *not* convert the plugin's example app to Kotlin gradle, only the plugin itself. The example app for plugins are non-trivial enough (due to native tests) that they should be converted separately. This has the bonus effect of validating that the plugin migration didn't require any changes in the client app.

Part of flutter/flutter#176065

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flutter/flutter@d117642...dd64978

2026-03-18 [email protected] Roll Skia from 2fb5fa71eb12 to f0a13e5efbad (2 revisions) (flutter/flutter#183830)
2026-03-18 [email protected] Roll Skia from ae3d36cb9e29 to 2fb5fa71eb12 (3 revisions) (flutter/flutter#183823)
2026-03-18 [email protected] Linux reuse sibling (flutter/flutter#183653)
2026-03-18 [email protected] Roll Skia from 84a180a1fa80 to ae3d36cb9e29 (4 revisions) (flutter/flutter#183812)
2026-03-18 [email protected] fix(web): handle asynchronously disposed platform views (flutter/flutter#183666)
2026-03-17 [email protected] (Test cross-imports) Remove legacy Material import from sliver_constraints_test (flutter/flutter#183351)
2026-03-17 [email protected] Fix Android Studio pluginsPath when version is unknown (do not use 0.0) (flutter/flutter#182681)
2026-03-17 [email protected] Fixes animation glitch into bottom sheet (flutter/flutter#183303)
2026-03-17 [email protected] Handle#6537 second grouped test (flutter/flutter#182529)
2026-03-17 [email protected] Add a Clarification for the docs of suggestionsBuilder of SearchAnchor (flutter/flutter#183106)
2026-03-17 [email protected] Remove obsolete null checks from style guide (flutter/flutter#181703)
2026-03-17 [email protected] [Impeller] Do not delete the GL object in a HandleGLES if the handle has a cleanup callback (flutter/flutter#183561)
2026-03-17 [email protected] Encode source file patches as UTF-8 in the code formatter script (flutter/flutter#183761)
2026-03-17 [email protected] Fix widget inspector control layout and add safe area regression test (flutter/flutter#180789)
2026-03-17 [email protected] Reland "[Android] Add mechanism for setting Android engine flags via Android manifest (take 2)" (flutter/flutter#182522)
2026-03-17 [email protected] fix(web): fix crash in Skwasm when transferring non-transferable texture sources (flutter/flutter#183799)
2026-03-17 [email protected] Roll Skia from dba893a44d7a to 84a180a1fa80 (7 revisions) (flutter/flutter#183803)
2026-03-17 [email protected] Framework: Improve DropdownButton selectedItemBuilder assertion (flutter/flutter#183732)
2026-03-17 [email protected] Add mainAxisAlignment to NavigationRail (flutter/flutter#183514)
2026-03-17 [email protected] Update android triage process to not look at unassigned p1s every week (flutter/flutter#183805)
2026-03-17 [email protected] Adds macos impeller new gallery transition perf test. (flutter/flutter#183802)
2026-03-17 [email protected] fix(web_ui): move prepareToDraw after raster to improve concurrency and stability (flutter/flutter#183791)
2026-03-17 [email protected] [build] Generate debug info for assembly. (flutter/flutter#183425)
2026-03-17 [email protected] [web] Fix occasional failure to find Chrome tab (flutter/flutter#183737)

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