added access variable to exams soo we can distinguish private, public and confidential exams and also bugfixes and improvements

src/utils/exams.be.ts

@@ -64,6 +64,7 @@ export const getExams = async (
 		.collection(module)
 		.find<Exam>({
 			isDiagnostic: false,
+			access: "public",
 		})
 		.toArray();
 
@@ -72,7 +73,7 @@ export const getExams = async (
 			...doc,
 			module,
 		})) as Exam[],
-	).filter((x) => !x.private);
+	)
 
 	let exams: Exam[] = await filterByEntities(shuffledPublicExams, userId);
 	exams = filterByVariant(exams, variant);