Save off foreground user id before passing the message to the handler on am:...

Save off foreground user id before passing the message to the handler on am: eda5120b am: c9e4372f am: 576a5678

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/17749071



Change-Id: I8251cdc0150978168bd37988641ac962ef9cbfb3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>