Add the string for the accessibility floating menu tooltip

Cherry picked from commit 232aa334733badca4567a5d72f9732d6b2e40626

Bug: 182532449
Bug: 175365399
Test: build pass
Change-Id: Ie352b1f9274b7f63133d53a1cfe27f6deb4cf00a
Merged-In: Ie352b1f9274b7f63133d53a1cfe27f6deb4cf00a
1 file changed