Set background color of more actions pill

This aligns the same logic as bindAppInfoPill and bindWindowingPill.
The background color should be set on the container rather than
the menu items.

Bug: 379176148
Flag: EXEMPT bugfix
Test: Switch between app with dark and light background.
      Press app handle on top. The background color of menu item
      should be updated.
Change-Id: I73854817b8d5fca7c65418ce5ceba693eacda5e1