Fix authentication error causing 500 error by adding check for isAuthenticated function existence.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 705f2157-ef97-4fbd-89e4-8c7f2ecaea90
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/7ed01c5f-a82d-405a-b728-b2e3d127c60c/f23c0b09-ba7a-43a9-b8cd-a87451662495.jpg

server/authorization.ts

@@ -17,7 +17,7 @@ export type RequirePermissionOptions = RequireAuthOptions & {
 export function requireAuth(options: RequireAuthOptions = {}) {
   return async (req: Request, res: Response, next: NextFunction) => {
     // Check for session authentication
-    if (req.isAuthenticated()) {
+    if (typeof req.isAuthenticated === 'function' && req.isAuthenticated()) {
       return next();
     }