80831 Revert “Update PopupMenuButton widget” (framework, f: material design, cla: yes, waiting for tree to go green)

80836 Add a ThreePointCubic spline that combines two cubic curves (framework, f: material design, cla: yes)

80852 add trailing commas in flutter/test/animation (framework, cla: yes, waiting for tree to go green)

80897 Reland double gzip wrapping NOTICES to reduce on-disk installed space (team, tool, framework, cla: yes)

80901 fix unsorted directives (a: tests, tool, framework, f: material design, a: internationalization, cla: yes, f: cupertino, waiting for tree to go green)

80926 add trailing commas in flutter/test/{foundation,gestures} (framework, cla: yes)