7518 Update default flutter_assets path for iOS embedding (cla: yes)

7522 Revert “Wrap the user entrypoint function in a zone with native exception callback. (#7512)” (cla: yes)

7525 Support custom kernel blob path in test fixtures (cla: yes)

7528 Ensure the ResourceContext is not ripped out from under dart (cla: yes)

7530 Fix suspicious typo “painted” to “paint” (cla: yes)

7532 Mark new unavailable for those init marked unavailable (cla: yes)

7533 Configure the embedder for AOT in “profile” and “release” runtime modes. (cla: yes)

7537 Add mock capability to PerformanceOverlayLayer (cla: yes)