62872 Reland “migrate part of painting to nullsafety (#62696)” (framework, team, waiting for tree to go green)

62891 Make _isLocalCreationLocation public (framework, waiting for tree to go green)

62894 [null-safety] revert export of Fake from test_api (a: tests, framework, waiting for tree to go green)

62897 Fix GestureDetector long press callback handling (framework)

62898 Make the Skia expectation parser more resilient and update to “master_str” (a: tests, framework, team, waiting for tree to go green)

62903 Revert “remove iOS folder (#61561)” (cp: 1.20, cp: 1.20 completed, engine, framework, team, tool)