fix: use PUT instead of PATCH for language preference update

ogWebconsole/src/app/layout/header/header.component.ts

@@ -79,10 +79,9 @@ export class HeaderComponent implements OnInit {
     // Persistir en servidor si el usuario está autenticado
     const uuid = this.auth.uuid;
     if (uuid) {
-      this.http.patch(
+      this.http.put(
         `${this.config.apiUrl}/users/${uuid}`,
-        { language: lang },
-        { headers: { 'Content-Type': 'application/merge-patch+json' } }
+        { language: lang }
       ).subscribe({
         error: (err) => console.error('Error saving language preference:', err)
       });