Opt in systemui for BAL

We see some calls from android.uid.systemui being blocked in our logs. Unfortunately we cannot exactly identify the source of these calls, but in a manual review we identified some invocations that may be affected. To avoid activities being blocked and functionality regression, this change will revert those code paths back to T behavior by opting into allowing the launch if the PI sender (systemUI) is in the foreground. Maybe not all these changes are required, but any missed change might cause functionality to break, while extra changes have no functional impact.

The change is relatively safe since it won't block anything, only allow the launch, as it was allowed by default in T.

Change-Id: Ide20c906e9852ac49abbc8af8570313a8f5f965e
Test: compile + presubmit
Bug: 284486752