Refine Emergency shortcut button UI

 - Change the layout parameter to match UI guideline.
 - Remove string "emergency_information_owner_content_description" for b/111492007.

Test: Manually
Bug: 80406570
Bug: 111418029
Bug: 111414720
Change-Id: I849138d1db8ee7d4780dd7804224b30272eb2de0
7 files changed