Roll Flutter Engine from bcb281cde579 to 8e19915c19fc (4 revisions) (#158354)

flutter/engine@bcb281c...8e19915

2024-11-07 skia-flutter-autoroll@skia.org Roll Skia from e9a7546ef3d9 to 2ed9606702f1 (1 revision) (flutter/engine#56434)
2024-11-07 jason-simmons@users.noreply.github.com [Impeller] Use Matrix::MakeTranslateScale to compute the source-to-destination mapping in DrawImageRect (flutter/engine#56433)
2024-11-07 chris@bracken.jp iOS: Eliminate ScopedBlock, ScopedTypeRef, ScopedPolicy (flutter/engine#56410)
2024-11-07 jacksongardner@google.com [skwasm] Make sure to include the transfer list when using postMessage. (flutter/engine#56431)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC jsimmons@google.com,zra@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Author: engine-flutter-autoroll

bin/internal/engine.version

@@ -1 +1 @@
-bcb281cde579a3072adc04a8ba2d0709cd815fb3
+8e19915c19fc920ad287059b8be47079234d1cd9