Roll Flutter Engine from 538975f2511b to c953c83112ba (3 revisions) (#141886)

https://github.com/flutter/engine/compare/538975f2511b...c953c83112ba

2024-01-19 flar@google.com [Impeller] switch Rect fields to LTRB implementation (flutter/engine#49816)
2024-01-19 68449066+zijiehe-google-com@users.noreply.github.com [Fuchsia] Redo - Use chromium test-scripts to download images and execute tests (flutter/engine#49847)
2024-01-19 skia-flutter-autoroll@skia.org Roll Skia from fb3f61d932e6 to 2536dc6fef1d (2 revisions) (flutter/engine#49892)

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 jonahwilliams@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

-538975f2511b1a6be1e8a6a21b2928dbd0dca754
+c953c83112ba788d82d3eba08a435b260de1e218