feat: refine global search RBAC and fix image loading

- Restricted Agent search to Attendances only.

- Enabled Super Admin search for Organizations (Tenants).

- Fixed user avatar URL construction in search results.

- Added Organizations category to search dropdown for Super Admins.

services/dataService.ts

@@ -17,7 +17,7 @@ const getHeaders = () => {
   };
 };
 
-export const searchGlobal = async (query: string): Promise<{ members: User[], teams: any[], attendances: any[] }> => {
+export const searchGlobal = async (query: string): Promise<{ members: User[], teams: any[], attendances: any[], organizations?: any[] }> => {
   try {
     const response = await fetch(`${API_URL}/search?q=${encodeURIComponent(query)}`, {
       headers: getHeaders()
@@ -26,7 +26,7 @@ export const searchGlobal = async (query: string): Promise<{ members: User[], te
     return await response.json();
   } catch (error) {
     console.error("API Error (searchGlobal):", error);
-    return { members: [], teams: [], attendances: [] };
+    return { members: [], teams: [], attendances: [], organizations: [] };
   }
 };