Merge "Check PendingStartActivityUids in getAppStartModeLocked." into rvc-dev am: 66929380ab am: 1cfab36cfc

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12055922

Change-Id: I60651996063a105f887aa1faa0ab3553854c9e08