Update registry.py

[AbbottKilig]

update registry.py to support Qwen3 Embedding Model

[github-actions]

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[DarkLight1337]

Could you elaborate? This shouldn't be necessary since vLLM can automatically use generation models as pooling models.

[AbbottKilig]

Could you elaborate? This shouldn't be necessary since vLLM can automatically use generation models as pooling models.

If do not and this line code, vllm will load qwen3 using transformers as background. and print log like this:
WARNING 05-07 14:52:12 [utils.py:79] Qwen3ForSequenceClassification has no vLLM implementation, falling back to Transformers implementation. Some features may not be supported and performance may not be optimal.
INFO 05-07 14:52:12 [transformers.py:117] Using Transformers backend.

[mergify]

This pull request has merge conflicts that must be resolved before it can be
merged. Please rebase the PR, @AbbottKilig.

https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/syncing-a-fork

[DarkLight1337]

Closing as superseded by #19260