handle thrown errors in updatePolicyMutation

src/api/hooks/admin/useModerationPolicies.ts

@@ -28,7 +28,17 @@ const useModerationPolicies = () => {
   const updatePolicyMutation = useMutation({
     mutationFn: async (spec: PolicySpec) => {
       const response = await api.put('/api/v1/admin/ditto/policies/current', spec);
-      return response.json();
+
+      // Parse the JSON response
+      const data = await response.json();
+
+      // Check if the response contains an error
+      if (data && 'error' in data) {
+        // Throw the error to be caught by the caller
+        throw new Error(data.error);
+      }
+
+      return data;
     },
     onSuccess: () => {
       queryClient.invalidateQueries({ queryKey: ['admin', 'current_moderation_policy'] }); // Refetch after update