Build browse intents based on target user.

SystemUI runs under a single user (user 0), and needs to build
browse intents for secondary users.  To accommodate this, the safety
check recently added to buildBrowseIntent() needs to be relaxed
when building for a non-current user.

Bug: 79733193
Test: builds, boots
Change-Id: Icce014bf824d0a0ee15e3d84c34f1c2b73d213c1