Add special mods for the base game and expansions

Just for the metadata

lib/mod.dart

@@ -282,18 +282,6 @@ class Mod {
       );
     }
 
-    // Check if this is RimWorld base game or expansion
-    bool isBaseGame = id == 'ludeon.rimworld';
-    bool isExpansion = !isBaseGame && id.startsWith('ludeon.rimworld.');
-
-    // If this is an expansion, ensure it depends on the base game
-    if (isExpansion && !loadAfter.contains('ludeon.rimworld')) {
-      loadAfter.add('ludeon.rimworld');
-      logger.info(
-        'Added base game dependency for expansion mod: ludeon.rimworld',
-      );
-    }
-
     final fileCountTime =
         stopwatch.elapsedMilliseconds - metadataTime - xmlTime;
     final totalTime = stopwatch.elapsedMilliseconds;
@@ -314,8 +302,9 @@ class Mod {
       loadBefore: loadBefore,
       incompatibilities: incompatibilities,
       size: size,
-      isBaseGame: isBaseGame,
-      isExpansion: isExpansion,
+      // No mods loaded from workshop are ever base or expansion games
+      isBaseGame: false,
+      isExpansion: false,
     );
   }