🌍 Refactor regional form check logic for better readability and clarity in gamemaster utility function

code/websites/pokedex.online/src/utilities/gamemaster-utils.js

@@ -48,13 +48,13 @@ export function breakUpGamemaster(gamemaster) {
         acc.pokemonAllForms.push(item);
 
         // Add to pokemon (filtered - first occurrence OR regional forms)
-        if (
-          !acc.pokemonSeen.has(pokemonId) ||
-          (acc.pokemonSeen.has(pokemonId) &&
-            regionCheck.includes(
-              pokemonSettings?.form?.split('_')[1]?.toLowerCase()
-            ))
-        ) {
+        // Check if this is a regional form by looking at the form string
+        const form = pokemonSettings?.form;
+        const isRegionalForm = form ? regionCheck.includes(
+          form.split('_')[1]?.toLowerCase()
+        ) : false;
+
+        if (!acc.pokemonSeen.has(pokemonId) || (acc.pokemonSeen.has(pokemonId) && isRegionalForm)) {
           acc.pokemonSeen.add(pokemonId);
           acc.pokemon.push(item);
         }