Update TimetableErrorDialog.tsx

Author: Austin-X

course-matrix/frontend/src/pages/TimetableBuilder/TimetableErrorDialog.tsx

@@ -19,8 +19,7 @@ const TimetableErrorDialog: React.FC<TimetableErrorDialogProps> = ({
   errorMessage,
   setErrorMessage,
 }) => {
-  const dialogTitle =
-    errorMessage !== null ? errorMessage : "Unknown error occurred";
+  const dialogTitle = errorMessage;
   const dialogDescription = errorMessage?.includes("title already exists")
     ? "Please choose another title for your timetable"
     : null;