Refactor move selection prevention to use interface

Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Celebrate.cs

@@ -1,10 +1,10 @@
 namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
 
 [Script(ScriptCategory.Move, "celebrate")]
-public class Celebrate : Script
+public class Celebrate : Script, IScriptPreventMoveSelection
 {
     /// <inheritdoc />
-    public override void PreventMoveSelection(IMoveChoice choice, ref bool prevent)
+    public void PreventMoveSelection(IMoveChoice choice, ref bool prevent)
     {
         // This move is mostly useless, and it's not worth the effort to implement it.
         // Prevent it from being selected.