quicksettings/audio: Close action drawer when opening volume osd

Now that the action drawer no longer takes focus, we need to manually
trigger the action drawer to close when opening the volume osd.

quicksettings/audio/contents/ui/main.qml

@@ -15,6 +15,7 @@ QS.QuickSetting {
     settingsCommand: "plasma-open-settings kcm_pulseaudio"
 
     function toggle() {
-        MobileShellState.ShellDBusClient.showVolumeOSD()
+        MobileShellState.ShellDBusClient.closeActionDrawer();
+        MobileShellState.ShellDBusClient.showVolumeOSD();
     }
 }