RESTRICT AUTOMERGE Ignore pinned Windows (Consolidated fix)

ag/32704936
ag/35782210
ag/36195227
ag/36359572

Bug: 439984935
Test: atest BackgroundActivityLaunchTest
Flag: EXEMPT BUGFIX
Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:706a5659e316aad87298225d145574719c5ac9de
Merged-In: I9ce93366a0876c7bc594ef818c8598342d70513d
Change-Id: I9ce93366a0876c7bc594ef818c8598342d70513d
8 files changed