landing to unblock meta rollback

* Fix PointerAddedEvent handling in tester

This reverts commit e8e1eb51.

Gives plugin and package a constraint on the flutter version, which will be from 2 stable's ago when this goes to stable. Adds an upper bound of 2.0

* a53782f69 Roll Skia from 6130d5079d55 to 0c0d8dd6d637 (3 revisions) (flutter/engine#19570)

* 0541502d7 kick build (flutter/engine#19575)

* 07d509035 Roll Skia from 0c0d8dd6d637 to cf5e35f72130 (13 revisions) (flutter/engine#19573)

* 35b5aa5af switch const finder to package_config (flutter/engine#19576)

* de0932b8c Manual roll of Dart 06cb010247...69aba23371 (flutter/engine#19577)

* b919945af include list_libraries.dart as a snapshot for fuchsia (flutter/engine#19567)

* 3fe5edf8e Roll Skia from cf5e35f72130 to b4d60f807dbd (5 revisions) (flutter/engine#19587)

* a15bc1be2 [CanvasKit] Dispose the overlay surface when a platform view is disposed (flutter/engine#19546)

* 0dc86cda1 Only attempt surface creation in viewDidLayoutSubviews if the application is active. (flutter/engine#19592)

update flutter precache --force to delete all stamp files. In the event that a user is hitting a cache issue, this should be easier than re-downloading all artifacts or manually blowing away the cache.

This is probably how it should have worked in the first place

Roll packages, update XML deprecations.

This reverts commit 2c7e5dd9.

This reverts commit 2ab50994.

This field is used to look-up the event in the platform
that resuted a given `PointerEvent`. This is currently only
used on Android, where the `embedderId` is set to be the
`motionEventId` for a given `MotionEvent`.

Roll engine to d0d6a4c2362d2ed478006bb3b01c34c0e96033b4

Remove globals from flutter_tester device and cleanup test case. Not completely gone since the Kernel Builder will still use them, but a good incremental improvement.

Missed validation to go with cast. Added test case to reproduce.