Correct type hint in config models

[jorisSchaller]

What does this PR do?

Most models are using a config with rms_norm_eps: Optional[int] = 1e-6: I modified it to an optional float.
This update configs that use a type of optional int instead of optional float for the epsilon value for their RMS norm.
You can clearly see that the epsilon has a default value of 10e-6 (float), the hint should therefore be adjusted.

FIx no issue.

Before submitting

• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).

Who can review?

Let me know if you want any changes, @ArthurZucker @Cyrilvallez @stevhliu, I tried to find all occurence of it, but some might have slipped through.

[github-actions]

[For maintainers] Suggested jobs to run (before merge)

run-slow: deepseek_v2, deepseek_v3, dots1, gemma, gemma2, gemma3, granite, granitemoe, granitemoehybrid, granitemoeshared, jetmoe, llama, mistral, qwen2, qwen2_5_omni, qwen2_moe

[Rocketknight1]

Looks good but please run make fix-copies to propagate modular changes! Ping me again whenever the CI is green and I'll merge it