Fix packet loss when deploy little model

[sdli1995]

fix packet loss when deploy small llm like qwen 0.5B or fishauido

Motivation

We found that when deploying some small LLMs, SGlang experiences packet loss under high load because the scheduler's results return too quickly, and at the same time, the rid is not updated in rid_to_state

Modifications

we move send_to_scheduler after rid_to_state update

Checklist

• Format your code according to the Contributor Guide.
• Add unit tests as outlined in the Contributor Guide.
• Update documentation as needed, including docstrings or example tutorials.

[merrymercy]

@sdli1995 Can you fix the lint and CI errors?
https://sgl-project.github.io/references/contributor_guide.html#format-your-code

[merrymercy]

move to #2717