Roll Flutter Engine from 60a7bb2353b6 to a6aa5d826649 (2 revisions) (…

…#149627)

flutter/engine@60a7bb2...a6aa5d8

2024-06-03 [email protected] Roll Dart SDK from 53c41325c29f to 49b5590c8d80 (4 revisions) (flutter/engine#53181)
2024-06-03 [email protected] Widen CPU affinity set. (flutter/engine#53136)

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 [email protected],[email protected],[email protected] 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

@@ -1 +1 @@
-60a7bb2353b614d6b089fbcc60694e6e8da342ec
+a6aa5d826649c0607c2a19f4ca90ab2b43e2ecde