Add a mechanism to switch between action row view varians

Use ViewStub to lazy inflate actin row view variant based on an
argument; will be used with a feature flag.
Colateraly, add a workaround for icon tinting issue (commented in the
code) for the new scrollable action row.

Bug: 262278109
Test: manual tests that the existing layout visually statys the same in
all layout variants.

Change-Id: I289949e94864cb96c81c722eb3a39887cc130779
8 files changed