Fix A11y issue of chips and support reorder animation in RTL

- When we sort the chips, we removed all views of chipGroup
  before. It will lose the A11y focus. Keep the clicked chip.
- Support reorder animation in RTL
- Use LinearLayout to instead of ChipGroup.
  If we set paddingEnd in ChipGroup, the layout is wrong in RTL mode.

Test: manual
Change-Id: Ib7604275c809166e196818045c402e836a4298e2
Fix: 122492579
Fix: 122711575