Roll Flutter from 440713c3b287 to 70a3c3cc935e (11 revisions) (flutter#9653)

flutter/flutter@440713c...70a3c3c

2025-07-20 37911054+Musaddiq625@users.noreply.github.com Add optional splashColor property to ExpansionTile (flutter/flutter#172224)
2025-07-20 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from 6agRTm-nf09sDmfQG... to 8MyOdk7FEK-MqkzIF... (flutter/flutter#172420)
2025-07-19 engine-flutter-autoroll@skia.org Roll Dart SDK from ca7224f7dfd7 to a821b47e7a4d (1 revision) (flutter/flutter#172407)
2025-07-19 engine-flutter-autoroll@skia.org Roll Dart SDK from 9982ab49440a to ca7224f7dfd7 (2 revisions) (flutter/flutter#172401)
2025-07-19 codefu@google.com fix: produce pom/jar files with content_hash (flutter/flutter#172378)
2025-07-18 engine-flutter-autoroll@skia.org Roll Dart SDK from fe2232bd5b9f to 9982ab49440a (2 revisions) (flutter/flutter#172393)
2025-07-18 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from HXdm7P0a4ZJVm_TE-... to 6agRTm-nf09sDmfQG... (flutter/flutter#172392)
2025-07-18 65155920+0xharkirat@users.noreply.github.com Adopt Null-Aware Elements in `packages/flutter/lib/src/material` (flutter/flutter#172285)
2025-07-18 737941+loic-sharma@users.noreply.github.com Recommend using Flutter feature flags over platform-specific configs (flutter/flutter#172324)
2025-07-18 jmccandless@google.com TestTextInput should reset its key handler between tests (flutter/flutter#172323)
2025-07-18 mdebbar@google.com Mark Mac_* tool_tests_commands as bringup to unblock tree (flutter/flutter#172388)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-packages
Please CC bmparr@google.com,stuartmorgan@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Packages: 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

Author: engine-flutter-autoroll

.ci/flutter_master.version

@@ -1 +1 @@
-440713c3b2878048be2661a6705b219c51f72c95
+70a3c3cc935e49b44db818348dd2d57f055ab762