2618 [package_info] add support for macos to package_info plugin (cla: yes)

2625 [image_picker] fix bug, sometimes double click cancel button will crash (cla: yes)

2629 [google_maps_flutter] Fix the visual jarring during the first gesture on the map (cla: yes)

2630 [scripts] Exclude shared_preferences_windows package (cla: yes)

2633 [e2e] Replaces the check for ActivityTestRule (cla: yes)

2634 [google_sign_in] Add serverAuthCode attribute to google_sign_in_platform_interface (cla: yes, submit queue, waiting for test harness)

2636 [google_sign_in] Move GoogleSignInWrapper to a separate file. (cla: yes)