Roll Flutter Engine from 7a573c21a4ad to 34a8b9bdaaac (1 revision) (#144147)

https://github.com/flutter/engine/compare/7a573c21a4ad...34a8b9bdaaac

2024-02-26 109111084+yaakovschectman@users.noreply.github.com Add Platform View Manager to Windows shell (flutter/engine#50598)

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

-7a573c21a4ad148be301a022bfb61123c9aa62c0
+34a8b9bdaaaccf9e32db343b876eeab71b5e2497