Roll Flutter Engine from 194d90de78cc to a06926d05d2b (3 revisions) (#140815)

https://github.com/flutter/engine/compare/194d90de78cc...a06926d05d2b

2024-01-02 dnfield@google.com Make sure to finish the suite if all tests are skipped (flutter/engine#49339)
2024-01-02 26625149+0xZOne@users.noreply.github.com Fix NPE when platform plugin delegate is null (flutter/engine#49391)
2024-01-02 26625149+0xZOne@users.noreply.github.com Add try-with-resource support to TraceSection (flutter/engine#49445)

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 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

-194d90de78cc3b86d96628b8d5dfe7b6f21bbaad
+a06926d05d2b7a30d519e3413dfd678cdddb5bcf