Roll Dart SDK from 6a7ae1ffd1c9 to 8e882349fcab (2 revisions) (#173499)

https://dart.googlesource.com/sdk.git/+log/6a7ae1ffd1c9..8e882349fcab

2025-08-09 dart-internal-merge@dart-ci-internal.iam.gserviceaccount.com
Version 3.10.0-83.0.dev
2025-08-09 dart-internal-merge@dart-ci-internal.iam.gserviceaccount.com
Version 3.10.0-82.0.dev

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diff --git a/DEPS b/DEPS
index 2f2c789..e5e183d 100644
--- a/DEPS
+++ b/DEPS
@@ -56,7 +56,7 @@
   # Dart is: https://github.com/dart-lang/sdk/blob/main/DEPS
   # You can use //tools/dart/create_updated_flutter_deps.py to produce
   # updated revision list of existing dependencies.
-  'dart_revision': '6a7ae1ffd1c918e7e5c01a820328d28d29bb9129',
+  'dart_revision': '8e882349fcab6a9a92908fd708e722e6d55c5396',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py