MAP Client connect after PBAP Client

Add code to automatically attempt to connect MAP Client (if enabled)
after PBAP Client connects.  This will typically be invoked at system or
adapter reset, but could as well happen if MAP Client isn't connected
and a new PBAP connection is established.

Bug: 32153228
Change-Id: I9ac5121ccf0d7ef3e5847df32034094e085aa434
(cherry picked from commit 46873217f3ddb8b848ce0b8fdf4a0531dfb04224)