fix: change GAME_ROUNDS from strings to numbers

apps/api/src/services/gameService.test.ts

@@ -14,7 +14,7 @@ const validRequest: GameRequest = {
   target_language: "it",
   pos: "noun",
   difficulty: "easy",
-  rounds: "3",
+  rounds: 3,
 };
 
 const fakeTerms = [

apps/api/src/services/gameService.ts

@@ -21,7 +21,7 @@ export const createGameSession = async (
     request.target_language,
     request.pos,
     request.difficulty,
-    Number(request.rounds),
+    request.rounds,
   );
 
   const answerKey = new Map<string, number>();