Bump engine version for Flutter 3.38.4 stable hotfix. - #179424

…r/flutter#179424)

…r/flutter#179424)

Reverts #176063

Fixes: #179667

Git bisect:
```
❯ git bisect log
# bad: [5b74a3b] Check for a null cached image in SingleFrameCodec::getNextFrame (#179483)
# good: [66dd93f] Bump engine version for Flutter 3.38.4 stable hotfix. (#179424)
git bisect start 'master' 'flutter-3.38-candidate.0'
# good: [df87ee3] Roll Skia from d10a0d877ff4 to ea7cdbc6b986 (15 revisions) (#176686)
git bisect good df87ee3
# good: [951b25d] Check for devicectl launch logs from std and file (#178167)
git bisect good 951b25d
# good: [337bbfb] Potentially fixing the flakiness in win32 windowing tests, but it needs some running (#178499)
git bisect good 337bbfb
# good: [8e952d6] Roll Skia from c20f797ab6f9 to 81a9a0751f00 (5 revisions) (#179417)
git bisect good 8e952d6
# good: [723fec5] Roll Skia from e19670f70406 to dccd48c6c6ab (6 revisions) (#179524)
git bisect good 723fec5
# bad: [96c6525] Roll Dart SDK from 3c07646cdcb9 to 019cb923bf62 (1 revision) (#179595)
git bisect bad 96c6525
# good: [4000ce2] Implementation of `TestWindowingOwner` for testing multi-window (#179355)
git bisect good 4000ce2
# good: [26f311c] Roll Dart SDK from 75899721aa42 to 3c07646cdcb9 (1 revision) (#179587)
git bisect good 26f311c
# bad: [8cc9fee] Roll Skia from b1936c760645 to 00e6fc407968 (5 revisions) (#179589)
git bisect bad 8cc9fee
# bad: [b37b6fa] Change GenerateFilledArcStrip to use non-overlapping triangles (#179292)
git bisect bad b37b6fa
# bad: [f197a3a] Android implementation of content sizing (#176063)
git bisect bad f197a3a
# first bad commit: [f197a3a] Android implementation of content sizing (#176063)
```