audio policy: fix remove_stream_suspend flag implementation

Fix order of flag evaluation in condition that caused a failure to
execute code in the condition.

Test: audiopolicy_tests
Test: RemoteSubmixTest
Flag: com.android.media.audioserver.remove_stream_suspend
Bug: 409706525
Bug: 415384176
Change-Id: I4345dd58e5070ce5d0e466b38e50111728245605