Fix test_nested_hook #5284

Job	Run time
run-tests (latest, test_prod)	1m 47s
run-tests (latest, test_core)	3m 4s
run-tests (latest, test_cli)	2m 56s
run-tests (latest, test_big_modeling)	2m 42s
run-tests (latest, test_deepspeed)	2m 50s
run-tests (latest, test_fsdp)	2m 24s
run-tests (latest, test_example_differences)	2m 14s
run-tests (latest, test_checkpoint_step)	4m 6s
run-tests (latest, test_checkpoint_epoch)	3m 44s
run-tests (latest, test_rest)	8m 50s
run-tests (minimum, test_prod)	2m 45s
run-tests (minimum, test_core)	3m 50s
run-tests (minimum, test_cli)	4m 0s
run-tests (minimum, test_big_modeling)	3m 34s
run-tests (minimum, test_deepspeed)	3m 31s
run-tests (minimum, test_fsdp)	3m 36s
run-tests (minimum, test_example_differences)	3m 28s
run-tests (minimum, test_checkpoint_step)	5m 23s
run-tests (minimum, test_checkpoint_epoch)	4m 36s
run-tests (minimum, test_rest)	9m 33s
	1h 18m 53s

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