Fix issue 2388215: Audio not routed to 3.5mm Headset after removal/insertion.

The problem occurs if the delay between the headset removal and insertion is less than one second.
In this case, as the headset disconnection intent is broadcast with a 1 second delay to allow music to pause
before updating the route, the connection intent is broadcast before and is ignored, leaving the system
in a state where the headset is considered disconnected.

The fix consists in inserting a delay before broadcasting the connection intent if a disconnection
intent is pending broadcast.