Merge "Set FLAG_DIM_BEHIND for Bidics Prompt window" into tm-qpr-dev am: 0641bef2

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19194825



Change-Id: I7b66f7434e37b9d0ecf21493e8fc1e697c3db6c9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>