Add notification avalanche triggers

 Update the cross-app cooldown strategy to only be active for 120 seconds
 after an 'avalanche trigger' was detected.
 Avalanche triggers are:
  - airplane mode off
  - boot completed
  - user switched
  - work profile enabled

 Adjust cooldown timers to: t1=60 seconds and t2=10 seconds.

Test: atest NotificationAttentionHelperTest
Bug: 270456865
Change-Id: I2ff9e4600df1d9d88896869ac20f39d4513b141c