Fix weather clock clipped when swiping in Lockscreen

The cause is that layer will be clipped to the bound when alpha < 1.0

Previously reverted due to b/280863001, b/280873846

Test: atest KeyguardClockSwitchControllerTest, KeyguardStatusViewTest
      TurnOffUnlockScreenToAoD, LockscreenWithNone
Bug: 279487893
Change-Id: Ia73ea00920ca0147e0acc5d2919b457203b7575e