Add KeyguardTransitionInteractorFactory and update tests to use it.

This was extracted from the upcoming refactor CL to make reviewing
easier. The refactor adds many more injections of the transition
interactor around the codebase, which required updating an
unreasonable number of tests.

Bug: 278086361
Test: atest SystemUITests
Change-Id: Ieda3f4fd8d7e124096f247095924f7535ca65dd5