Padding and color fixes to align with mocks

- Remove divider above actions.
- Some color fixes.
- Actions are always horizontal, no attr needed.
- Lots of margin and padding tweaks per mocks.
- Fix horizontal recyclerview padding in RTL

Test: Lots of manual inspection with a variety of share payloads.
Test: atest IntentResolverUnitTests
Bug: 283245199

Change-Id: Ica2757a90387afd6be793b8c44fa47fd136056c7
18 files changed