Roll Flutter Engine from 737e6f8ce85e to 1ba8fc0765f9 (4 revisions) (#140531)

https://github.com/flutter/engine/compare/737e6f8ce85e...1ba8fc0765f9

2023-12-22 dnfield@google.com Fix GetImpellerContext for ShellTestPlatformViewGL (flutter/engine#49337)
2023-12-21 flar@google.com [Impeller] Remove use of private Rect fields from PathBuilder (flutter/engine#49334)
2023-12-21 flar@google.com [Impeller] Do not skip rendering when mask blur is zero (flutter/engine#49342)
2023-12-21 737941+loic-sharma@users.noreply.github.com [Windows] Fix incorrect surface manager comment (flutter/engine#49335)

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 jimgraham@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

-737e6f8ce85ef78497e8d626e7ca6ccc4dd2c0d9
+1ba8fc0765f933b13d66b1320ad3c43e09a18868