Bug: https://github.com/flutter/flutter/issues/90623

21fb38029 Fix bug when platform views are reused when overlays are disabled. (flutter/engine#29050) (#91395)

* f30362bef Roll Skia from 47da0ac577aa to 6d0234673a40 (4 revisions) (flutter/engine#29047)

* 1a4d9063b [Linux] Reset keyboard states on engine restart (flutter/engine#28877)

* 6a00ce51c Roll Skia from 6d0234673a40 to a1b44b72eb47 (3 revisions) (flutter/engine#29049)

cd5dc3ba4 [webview_flutter] Update webview platform interface with new methods for running JavaScript. (flutter/plugins#4401) (#91352)

* Suppress diagnostics from // HACK comments

The first of three or four changes to update the platform directories of the packages in the Flutter repo that have out date platform code.

This batch includes updating the flutter_view example, updating the sanity check numbers in analyze.dart, and adding some missing Podfiles in the examples. I also eliminated some trailing whitespace in the templates for Android.

* Don't generate plugin registry in ResidentWebRunner

generateDartPluginRegistry was being set to true unconditionally in
ResidentRunner, bypassing the primary check in
DartPluginRegistrantTarget, and the targetPlatform was not set in that
codepath, bypassing the second after the changes in
https://github.com/flutter/flutter/pull/87991. This caused web hot
restarts to be slower due to doing unnecessary work.

This ensures that generateDartPluginRegistry is false in the
ResidentWebRunner to skip that unnecessary step.

Fixes https://github.com/flutter/flutter/issues/91262

* Formatting
Co-authored-by: Zachary Anderson <zanderso@users.noreply.github.com>
Co-authored-by: Zachary Anderson <zanderso@users.noreply.github.com>

* Use recently introduced Isolate.exit() in compute implementation

* Remove unused isolate variable