This reverts commit cb378edc.

c87105152 Do not call Animator::Delegate::OnAnimatorNotifyIdle until at least one frame has been rendered. (flutter/engine#29015) (#91431)

This is to necessary to open the tree.

Bug: https://github.com/flutter/flutter/issues/91422

Gradle was updated to a more recent version that expects openjdk 11 but
the openjdk version was not updated.

Gradle was updated to a more recent version that expects openjdk 11 but
the openjdk version was not updated.

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