base

Update lint check to accommodate new emoji sequences

These are not yet ready for updating in the unicode data, so we patch
them in code until they are.

Bug: 30594617
Change-Id: Ib4c8568aa4840341474eb0c0c95674d640473f4d
(cherry picked from commit 2b8b819fee939c1bca6347a74b42272bc7008fd5)