Send active device changed intent after connecting in AudioManager

Change will solve race condition with connecting device in AudioManager
and making active device propagated in system. This is very important
for communication because while setting communication device - this
device has to be connected in AudioManager otherwise setting
communication device will fail.

Bug: 230686378
Tag: #feature
Test: Switch active devices from Dialer or Cached device list
Change-Id: Ic0b0ed48d6146fda67690f8b3a84b8ef0dfc9252