Roll Flutter Engine from 3978ddd8d7a7 to 387f6f3c5fdb (3 revisions) (flutter#153111)

flutter/engine@3978ddd...387f6f3

2024-08-08 matej.knopp@gmail.com Fix FlutterMetalLayer testDealloc flakiness on iOS 18 (flutter/engine#54403)
2024-08-08 chris@bracken.jp [iOS] Bundle dSYM packages in Flutter.xcframework (flutter/engine#54414)
2024-08-08 skia-flutter-autoroll@skia.org Roll Dart SDK from 0131aabd8631 to 067c7cfcbc8c (1 revision) (flutter/engine#54437)

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,rmistry@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 @@
-3978ddd8d7a7e101ee1f00117ed8c1e34115fec9
+387f6f3c5fdba18f547e2d403169286702e18867