66277 [devicelab] fix manifest definition (cla: yes, team)

66284 Mark animated_placeholder_perf__e2e nonflaky (cla: yes, team, waiting for tree to go green)

66290 roll source_span 1.8.0-nullsafety.2 (cla: yes, team, tool)

66291 TextField intrinsic height layout bug (cla: yes, f: material design, framework)

66302 Revert “Turn off flutter_gallery__transition_perf_e2e_ios32 in devicelab” (cla: yes, team, waiting for tree to go green)

66305 Add Overflow back with deprecation (cla: yes, framework, waiting for tree to go green)