Fix NotificationManagerServiceTest for AAOS.

* Use uid 1000000 when system is using headless system user
* InlineReplyUriRecord should return current user when assigned USER_ALL
and system is using headless system user

Fixes: 190515128
Test: atest -c NotificationManagerServiceTest
Change-Id: I58f1991328b94996146982d8bc1949ce07dc8f69
2 files changed