fix navigator group in pulseaudio

Fix from https://forum.sailfishos.org/t/navigation-instructions-doesnt-play-via-bluetooth-headphones-but-phone-speaker/7826

sparse/etc/pulse/xpolicy.conf

@@ -134,7 +134,7 @@ source = droid.input.builtin@equals:"true"
 
 [group]
 name   = navigator
-flags  = set_sink, set_source
+flags  = set_sink, set_source, route_audio
 sink   = droid.output.media_latency@equals:"true"
 source = droid.input.builtin@equals:"true"