Only reset transform.label if it is correctly assigned (#17192)
Only reset transform.label if it is correctly assigned (#17192)


chamikaramj/beam,chamikaramj/beam,lukecwik/incubator-beam,chamikaramj/beam,lukecwik/incubator-beam,apache/beam,lukecwik/incubator-beam,chamikaramj/beam,lukecwik/incubator-beam,lukecwik/incubator-beam,apache/beam,chamikaramj/beam,chamikaramj/beam,apache/beam,lukecwik/incubator-beam,apache/beam,chamikaramj/beam,apache/beam,apache/beam,apache/beam,chamikaramj/beam,chamikaramj/beam,apache/beam,lukecwik/incubator-beam,chamikaramj/beam,apache/beam,lukecwik/incubator-beam,lukecwik/incubator-beam,lukecwik/incubator-beam,apache/beam,apache/beam