Fix the audio mode status when missing onAudioModeChanged

When the bluetooth device updater misses onAudioModeChanged event, e.g.
on device detail page, and go back to connected device page, the mode is
not re-fetched and stay in wrong state, which leads to the wrong device
state on UI.

Bug: 411169765
Flag: EXEMPT bug fix
Test: atest
Change-Id: I2422a09d1dae517d761355dafdc2b5e9d6becd2b