allow replacing orphaned dbus servers

This works around the issue, where dbus servers would stay around until
the application ends, although their corresponding session had already
ended. New sessions were then unable to communicate through dbus. Now,
newer servers will just replace any previous name owners.

src/dbus_mpris.rs

@@ -153,7 +153,9 @@ async fn create_dbus_server(
         panic!("Lost connection to D-Bus: {}", err);
     });
 
-    conn.request_name("org.mpris.MediaPlayer2.spotifyd", false, true, true)
+    // TODO: The first `true` allows us to replace orphaned dbus servers from previous sessions
+    // later. We should instead properly release the name when the session ends.
+    conn.request_name("org.mpris.MediaPlayer2.spotifyd", true, true, true)
         .await
         .expect("Failed to register dbus player name");