40704 add missing trailing commas (in dev/) (cla: yes, framework, team)

40706 Add fake keyboard key generation to the testing framework (a: tests, cla: yes, f: material design, framework)

40709 Fixed Selectable text align is broken (cla: yes, framework)

40710 Skia Gold Support for Local & PreSubmit Testing in package:flutter (a: images, a: tests, cla: yes, framework, severe: API break, team, will affect goldens)

40713 Material textselection context menu cannot disable select all (cla: yes, f: material design, framework)

40714 Revert “Propagate textfield character limits to semantics” (a: accessibility, a: tests, cla: yes, f: material design, framework)