audio policy: fix regression in A2DP playback

commit f05fc906 introduced a regression preventing playback over A2DP
to resume after the second time an A2DP device is connected.

Bug: 70245910
Test: Audio smoke test, CTS test for AudioTrack.
Change-Id: Ic6b5da96debf62be08ae12efec27ad36854fe3c5
2 files changed