[Structured Output][CI] Update structured output config to sync with upstream

[shen-shanshan]

What this PR does / why we need it?

Update structured output config to sync with upstream.

Does this PR introduce any user-facing change?

How was this patch tested?

• vLLM version: v0.10.2
• vLLM main: vllm-project/vllm@486c559

[gemini-code-assist]

Code Review

This pull request updates the configuration for structured outputs to align with recent upstream changes in vLLM. The changes primarily involve renaming guided_decoding and related parameters to structured_outputs. The modifications in tests/e2e/singlecard/test_guided_decoding.py correctly update the test cases to use the new API, and the changes in vllm_ascend/platform.py reflect this renaming in the configuration handling. The changes are consistent and appear correct. I have not found any issues of high or critical severity.

[github-actions]

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[github-actions]

This pull request has conflicts, please resolve those before we can evaluate the pull request.