Add group owner to mPeers when join a group without discover peers am: 20243f9ad1

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Wifi/+/26269398

Change-Id: Id16fcba025ec73f9d30628a1d7f429e6a4f99b16
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>