Revert "Revert "Limit the number of concurrently snoozed notifications""
This reverts commit 705019b5.
Reason for revert: adding merged in this time
Merged-In: I005b43979d1c708fd505c8b33ae0c8cb03ddbb35
Bug: 234441463
Change-Id: I5ecfdf77e56d9a50ca5cc8031ce83313b8d4ee5d
(cherry picked from commit e2ceb6ac)
Merged-In: I5ecfdf77e56d9a50ca5cc8031ce83313b8d4ee5d