[Test] pt-nightly-hf-mlm-roberta-b-pre-conv-v2-8-1vm without functionalization

[ManfeiBai]

Description

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Tests

Please describe the tests that you ran on TPUs to verify changes.

Instruction and/or command lines to reproduce your tests: ...

List links for your tests (use go/shortn-gen for any internal link): ...

Checklist

Before submitting this PR, please make sure (put X in square brackets):

• [x] I have performed a self-review of my code.
• [x] I have necessary comments in my code, particularly in hard-to-understand areas.
• [ ] I have run one-shot tests and provided workload links above if applicable.
• [ ] I have made or will make corresponding changes to the doc if needed.

[alanwaketan]

@ManfeiBai You can try one shot tests here: https://github.com/GoogleCloudPlatform/ml-testing-accelerators/blob/583e71a6bce8091f01f8c12fed6dc3b52f243902/tests/README.md?plain=1#L36 just to validate the test run. No need to wait until it finishes to see the result.