Privatise ModSelectOverlay methods that may be unsafe to be called externally

osu.Game/Overlays/Mods/ModSelectOverlay.cs

@@ -249,7 +249,7 @@ namespace osu.Game.Overlays.Mods
                                             {
                                                 Width = 180,
                                                 Text = "Deselect All",
-                                                Action = DeselectAll,
+                                                Action = deselectAll,
                                                 Origin = Anchor.CentreLeft,
                                                 Anchor = Anchor.CentreLeft,
                                             },
@@ -318,7 +318,7 @@ namespace osu.Game.Overlays.Mods
             sampleOff = audio.Samples.Get(@"UI/check-off");
         }
 
-        public void DeselectAll()
+        private void deselectAll()
         {
             foreach (var section in ModSectionsContainer.Children)
                 section.DeselectAll();
@@ -331,7 +331,7 @@ namespace osu.Game.Overlays.Mods
         /// </summary>
         /// <param name="modTypes">The types of <see cref="Mod"/>s which should be deselected.</param>
         /// <param name="immediate">Set to true to bypass animations and update selections immediately.</param>
-        public void DeselectTypes(Type[] modTypes, bool immediate = false)
+        private void deselectTypes(Type[] modTypes, bool immediate = false)
         {
             if (modTypes.Length == 0) return;
 
@@ -438,7 +438,7 @@ namespace osu.Game.Overlays.Mods
             {
                 if (State.Value == Visibility.Visible) sampleOn?.Play();
 
-                DeselectTypes(selectedMod.IncompatibleMods, true);
+                deselectTypes(selectedMod.IncompatibleMods, true);
 
                 if (selectedMod.RequiresConfiguration) ModSettingsContainer.Show();
             }