34121 Revert “Generate ELF shared libraries and allow multi-abi libs in APKs and App bundles” (cla: yes)

34123 Generate ELF shared libraries and allow multi-abi libs in APKs and App bundles (cla: yes, t: gradle, tool)

34137 Added tool sample for PageController (cla: yes, d: api docs, framework)

34159 Use product define for flutter web and remove extra asset server (cla: yes, tool, ☸ platform-web)

34162 Update the Fuchsia SDK (cla: yes, tool, ○ platform-fuchsia)

34163 update CupertinoDialogAction docs (cla: yes, d: api docs, f: cupertino)

34166 Revert “More verification on flutter build web, add tests and cleanup” (cla: yes)