Homepage UX revamp

- unified Search and Suggestion behavior between regular phone and two
  pane
- don't adjust padding
- update new icon drawable
- support group homepage preference with round corner on phone
- Remove avator from homepage
- Adjust homepage preference order

Bug: 333989622
Bug: 334130370
Test: visual
Change-Id: I9880b52553f164745766c8b9d5c996585285e52a