Roll Flutter Engine from cc1e7d145067 to 7b49dc9dd073 (3 revisions) (#145176)

https://github.com/flutter/engine/compare/cc1e7d145067...7b49dc9dd073

2024-03-14 skia-flutter-autoroll@skia.org Roll Dart SDK from 749988e4d748 to 2bc8b222d01f (1 revision) (flutter/engine#51421)
2024-03-14 110993981+htoor3@users.noreply.github.com [web] - fix text editing IME composition interruption on geometry updates (flutter/engine#51323)
2024-03-14 flar@google.com Avoid unnecessary transform resets for pixel snapping (flutter/engine#51337)

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 bdero@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

bin/internal/engine.version

-cc1e7d1450672261e7dd9b541e256cf7cf1d72cf
+7b49dc9dd073fa1760d8ecdca635c6e5b402ee51