Ensure local mods are constructed in time for Pop{In,Out}()

osu.Game/Overlays/Mods/ModSelectOverlay.cs

@@ -192,10 +192,11 @@ namespace osu.Game.Overlays.Mods
 
         protected override void LoadComplete()
         {
-            base.LoadComplete();
-
+            // this is called before base call so that the mod state is populated early, and the transition in `PopIn()` can play out properly.
             availableMods.BindValueChanged(_ => createLocalMods(), true);
 
+            base.LoadComplete();
+
             State.BindValueChanged(_ => samplePlaybackDisabled.Value = State.Value == Visibility.Hidden, true);
 
             // This is an optimisation to prevent refreshing the available settings controls when it can be