89620 Run flutter_gallery macOS native tests on presubmit (a: tests, team, platform-mac, cla: yes, waiting for tree to go green, a: desktop)

89621 Increase integration_test package minimum iOS version to 9.0 (platform-ios, cla: yes, waiting for tree to go green, integration_test)

89623 Roll Engine from 6809097101c4 to 4159d7f0f156 (1 revision) (cla: yes, waiting for tree to go green)

89625 [flutter_releases] Flutter stable 2.5.0 Framework Cherrypicks (engine, cla: yes)

89631 Roll Engine from 4159d7f0f156 to 6a3b04632b57 (2 revisions) (cla: yes, waiting for tree to go green)