[flexiglass] Lazy init canSwipeToEnter

Blind attempt to fix the attached bug.

Bug: 357966562
Change-Id: I3b58f3abd80395f86118ea81f9ae79cb6d1acb76
Flag: NONE this seems unflagged by nature so fixing it in an unflagged way
Test: manually verified that the device can lock and unlock
1 file changed