62162 Add Crane test to the new Gallery app (cla: yes, team, waiting for tree to go green)

62167 Ban unresolved dartdoc directives from HTML output (cla: yes, f: material design, framework, team, waiting for tree to go green)

62217 Pass –disable-dart-dev in more places (cla: yes, team, tool)

62218 Fix README typo (cla: yes, team, waiting for tree to go green)

62219 Simplify macrobencharks/picture_cache (cla: yes, team, waiting for tree to go green)

62234 Revert “bump nullsafety deps” (cla: yes, team, tool)

62249 Add –disable-dart-dev to docs.sh (cla: yes, team)