[V1] Enable Entrypoints Tests

[robertgshaw2-redhat]

SUMMARY:

• enable v1/entrypoints
• Undo skip after [Fix][Structured Output] using vocab_size to construct matcher #14868

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[russellb]

I added this to #14868 so hopefully we can just see it all pass there

[robertgshaw2-redhat]

This passes locally. I just want to get this in so nothing else breaks