conf: lower pulse client priority

So that jack and native pipewire clients get more priority. The pulse
clients are supposed to less critical desktop apps.

src/daemon/pipewire-pulse.conf.in

@@ -28,6 +28,7 @@ context.modules = [
         args = {
             nice.level   = -11
             #rt.prio      = 88
+            rt.prio      = 65
             #rt.time.soft = -1
             #rt.time.hard = -1
         }