Merge "Check PendingStartActivityUids in getAppStartModeLocked." into rvc-dev am: 66929380ab am: 235421ccd4

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

Change-Id: I5909a2a31452322c654e11d5dda551e31e7c3d80