28415 [flutter_releases] Flutter beta 2.5.0-5.3.pre Engine Cherrypicks (platform-ios, platform-android, cla: yes, platform-web)

28447 Revert “Display Features support (Foldable and Cutout)” (platform-android, cla: yes, platform-web, platform-fuchsia)

28520 [flutter_releases] apply patches to flutter-2.5-candidate.8 (platform-ios, platform-android, cla: yes, platform-fuchsia, embedder)

28535 [flutter_releases] flutter-2.6-candidate.3 Engine Cherrypicks (platform-ios, platform-android, cla: yes, platform-fuchsia, embedder)

28543 Allow injection of ExecutorService (platform-android, cla: yes)