Log the number of times when Lightbringer video call button appears.

Including in:
- expanded call log item
- collapsed call log item
- search
- in call UI

LOG_STORAGE_INCREASE(GB/week): 3.15
  5M active block user/day * 10 events/active = 350M event/wk
  350M event/wk * (3 * 3 [int32])/event = 3.15GB/wk

Test: GoogleCallLogAdapterTest, ContactListItemViewTest, InCallFragmentTest
PiperOrigin-RevId: 160423797
Change-Id: I6c0ade53caf767ea9b2610a4c0eb68fcc2bcedf7