Logging improvements for notification views

* Allows enabling verbose notification view dumping on debug builds without a rebuild
* Includes showing all the pflags on the notification view and the background view, the latter of which was critical in detecting the intermediate cause of b/233281914
* Verbose background logging now includes tint and ripple colors

Bug: 233281914
Test: dumpsysui NotificationStackScrollLayout
Change-Id: Iddebb1c3859967d09369074bbdb1f321be6d6868