[CICD] Expand unit test coverage on CUDA #155

Job	Run time
check_docker_changes	4s
MetaX tests / checkout_and_config	5s
MetaX tests / cli_validation / functional_test_cli	47s
CUDA tests	-1s
MetaX tests / unit_tests (c550) / unit-c550	6m 44s
MetaX tests / functional_tests_train / functional_test_train (c550, train, qwen3, 0_6b_metax)	2m 9s
MetaX tests / functional_tests_benchmark	0s
MetaX tests / functional_tests_hetero_train	0s
MetaX tests / functional_tests_inference	0s
MetaX tests / functional_tests_serve	0s
MetaX tests / all_tests_complete	4s
all_tests	4s
check_docker_changes	4s
MetaX tests / cli_validation / functional_test_cli	47s
CUDA tests	-1s
MetaX tests / unit_tests (c550) / unit-c550	6m 44s
MetaX tests / functional_tests_train / functional_test_train (c550, train, qwen3, 0_6b_metax)	6m 29s
MetaX tests / functional_tests_hetero_train	0s
MetaX tests / functional_tests_benchmark	0s
MetaX tests / functional_tests_serve	0s
MetaX tests / functional_tests_inference	0s
MetaX tests / checkout_and_config	5s
MetaX tests / all_tests_complete	4s
all_tests	3s
	24m 11s

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