50313 Update compile size benchmarks (cla: yes, team)

50315 Update minimum version to Xcode 11.0 (cla: yes, platform-ios, platform-mac, t: xcode, tool)

50316 Make onImage re-entrant safe (cla: yes, framework)

50318 Live image cache (a: images, cla: yes, framework, severe: API break, team)

50319 Fix lack of ancestor notification when a focus node is unfocused. (cla: yes, framework, waiting for tree to go green)

50322 use raw strings to avoid escaping (a: tests, cla: yes, d: examples, f: material design, framework, team, team: gallery, tool)

50324 Fix flutter doctor (pluginsPath) check for Mac (cla: yes, tool, waiting for tree to go green)