flake: avoid flake by ensuring params appear in the initial list

sometimes they would not appear in the initial list if they were added while the informer was starting up due to ObjectTracker race

staging/src/k8s.io/apiserver/pkg/admission/plugin/policy/validating/admission_test.go

@@ -1646,14 +1646,14 @@ func testParamRefCase(t *testing.T, paramIsClusterScoped, nameIsSet, namespaceIs
 		newClusterScopedParam(matchingParamName+"5", otherNonmatchingLabels),
 	}
 
-	require.NoError(t, testContext.UpdateAndWait(&policy, &binding))
-
 	for _, p := range params {
 		// Don't wait for these sync the informers would not have been
 		// created unless bound to a policy
 		require.NoError(t, testContext.Update(p))
 	}
 
+	require.NoError(t, testContext.UpdateAndWait(&policy, &binding))
+
 	namespacedRequestObject := newParam("some param", nonMatchingNamespace, nil)
 	clusterScopedRequestObject := newClusterScopedParam("other param", nil)