Deactivate new combo toggle on deselecting objects

Closes ppy#30713.

Was a point of discussion doing review:

	ppy#30214 (comment)

Given it got pointed out immediately for something so minor, I'm
inclined to believe it's a rather undesirable change.

osu.Game/Screens/Edit/Compose/Components/EditorSelectionHandler.cs

@@ -258,8 +258,7 @@ private void createStateBindables()
 
         private void resetTernaryStates()
         {
-            if (SelectionNewComboState.Value == TernaryState.Indeterminate)
-                SelectionNewComboState.Value = TernaryState.False;
+            SelectionNewComboState.Value = TernaryState.False;
             AutoSelectionBankEnabled.Value = true;
             SelectionAdditionBanksEnabled.Value = true;
             SelectionBankStates[HIT_BANK_AUTO].Value = TernaryState.True;