Switch logging from Protolog to BubbleLog.

Updated Bubble and BubbleController classes to use BubbleLog instead of
Protolog.

This CL introduces 2 approaches - Bubble.java uses the hardcoded tag,
while BubbleController.java uses constant log tag that is passed as a
message parameter.

Both approaches reduces cognitive load of log reader since they specify
class and method of where call was placed.

Bug: 436320481
Test: TreeHugger
Flag: com.android.wm.shell.enable_bubble_event_history_logs
Change-Id: Icc1dd0c1440652225c60c7bd174fec69026d49c3