audio: fix the Ultrasound is denied or muted

The STREAM_TTS will be dennied or muted when other
is starting or started

Bug: 200256985
Test: Play Ultrasound with touch sound
Signed-off-by: Carter Hsu <carterhsu@google.com>
Change-Id: I5af6ef65d456ece2837333b411090d8e8a840fc7