audio policy: handle errors for usb broadcast device connection

When the USB is quickly connected and then disconnected, the
broadcast device may not have enough time to read the USB info,
preventing the dynamic profile from being created and causing
routing errors. Therefore, when the usb broadcast device
connection fails, setDeviceConnectionState will be interrupted.

To avoid failures on devices running HIDL and having HAL modules
that do not implement 'IDevice.setConnectedState', do not
consider 'Result::NOT_SUPPORTED' as an error.

Bug: 360284877
Test: atest audiopolicy_tests
Change-Id: I0b414cb0222fafb6b55f77be238b88fe960eb52e