Use a single combine function to combine all boolean flows instead of nested combines

Reduces the number of yield points in the repository, otherwise there could some delay between one of the individual flows changing to true and the combined flow from changing to true.

Bug: 291161749
Test: atest DeviceEntryFaceAuthRepositoryTest
Change-Id: I50c5ddc32b595374741a701afec522b70440f38a
1 file changed