Fix getUser status code + add sample response

Author: simonhammes

system_admin_account_operations.yaml

@@ -709,10 +709,29 @@ paths:
       parameters:
         - $ref: "#/components/parameters/user_id"
       responses:
-        "403":
-          description: Successful response
+        "200":
+          description: OK
           content:
-            application/json: {}
+            application/json:
+              schema:
+                type: object
+              example:
+                org_id: 1,
+                org_name: "Team 1"
+                email": "6196ab3dacef4e539ae8da4844b58a1f@auth.local"
+                name: "John Doe"
+                contact_email: "john.doe@example.org"
+                unit: ""
+                login_id: ""
+                id_in_org: ""
+                is_staff: false
+                is_active: false
+                phone: ""
+                create_time: "2025-09-29T12:56:15+02:00"
+                role: "default"
+                avatar_url: "https://cloud.seatable.io/media/avatars/a/a/f01c6071928d63fd2837312e64d915/resized/256/70017f2bc5e0c9eeda31e8e401e2cbef.png"
+                has_default_device: false
+                is_force_2fa: true
     put:
       tags:
         - Users