Roll Flutter Engine from 039439c1ffe8 to 43a1598713bb (1 revision) (#139412)

https://github.com/flutter/engine/compare/039439c1ffe8...43a1598713bb

2023-12-02 flar@google.com [Impeller] Directly tessellate stroked circles. (flutter/engine#48586)

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 matanl@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

-039439c1ffe83bed3950521cf0c3ae4be057a30b
+43a1598713bb1015ae8ab05b01597de1074c0859