Move cleaning up previous clock and assigning clock for clockEventController to KeyguardClockRepository when currentClock changes

Flag: ACONFIG com.android.systemui.migrate_clocks_to_blueprint STAGING
Test: manual test with compose_lockscreen flag on/off
Bug: 329306288

Change-Id: I2408214154882aa39de9f4f275680aacc85c0d7b
12 files changed