Refactor the design and improve the animations of Accessibility Floating Menu(9/n).

Actions:
1) Support the feature to avoid overlapping on the keyboard.
2) Fix the issue overlapping on primary action on the bottom.

Bug: 227715451
Bug: 252913008
Test: manual test
Change-Id: Ie3404276c56c9fb1e3d18d348cfc5a7b4815c905