Always use SeedableRandomSampler #3424

Job	Run time
run-tests (latest, test_prod)	1m 22s
run-tests (latest, test_core)	1m 29s
run-tests (latest, test_cli)	3m 2s
run-tests (latest, test_big_modeling)	1m 15s
run-tests (latest, test_deepspeed)	1m 25s
run-tests (latest, test_fsdp)	1m 19s
run-tests (latest, test_example_differences)	1m 41s
run-tests (latest, test_checkpoint_step)	4m 54s
run-tests (latest, test_checkpoint_epoch)	2m 48s
run-tests (latest, test_rest)	12m 14s
run-tests (minimum, test_prod)	1m 0s
run-tests (minimum, test_core)	1m 52s
run-tests (minimum, test_cli)	2m 54s
run-tests (minimum, test_big_modeling)	1m 14s
run-tests (minimum, test_deepspeed)	49s
run-tests (minimum, test_fsdp)	1m 24s
run-tests (minimum, test_example_differences)	1m 22s
run-tests (minimum, test_checkpoint_step)	4m 38s
run-tests (minimum, test_checkpoint_epoch)	3m 8s
run-tests (minimum, test_rest)	11m 23s
	1h 1m 13s

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