Account for mic fgs in AudioRecordingDisclosureBar

Take into account foreground services of type 'microphone' in
AudioRecordingDisclosureBar - watch processes that run such fg services
and treat them as so they are already recording.

Bug: 152364373
Test: make, run audio recording app
Change-Id: I7961ad332d5741a12f029dcc95e909572f30ad05