created a demo mode for the guest pwa

resources/js/admin/api.ts

@@ -112,12 +112,12 @@ export type SendGuestNotificationPayload = {
 
 export type TenantPhoto = {
   id: number;
-  filename: string;
+  filename: string | null;
   original_name: string | null;
   mime_type: string | null;
   size: number;
-  url: string;
-  thumbnail_url: string;
+  url: string | null;
+  thumbnail_url: string | null;
   status: string;
   is_featured: boolean;
   likes_count: number;