fix: invalid mutation for product media gallery #31543

Job	Run time
setup	5m 38s
Shard (0) Module Integration Tests	13m 2s
integration-tests-packages	15m 52s
Shard (0) HTTP Integration Tests	13m 7s
Shard (0) Unit Tests	11m 15s
Shard (1) Module Integration Tests	12m 17s
Shard (1) HTTP Integration Tests	11m 20s
Shard (1) Unit Tests	8m 53s
unit-tests	1s
integration-tests-modules	1s
integration-tests-http	1s
	1h 31m 27s

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