[recipe] feat: Add Qwen3 30B MoE NPU recipe

[Shangwei-Li]

What does this PR do?

Update recipe/dapo/run_dapo_qwen3_30b_npu.sh.

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API and Usage Example

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# Add code snippet or script demonstrating how to use this
cd /path/to/verl
bash recipe/dapo/run_dapo_qwen3_30b_base_npu_fsdp.sh

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[gemini-code-assist]

Code Review

This pull request introduces a new recipe script to run DAPO with the Qwen3-30B base model on NPUs using FSDP, and updates the documentation to include this new configuration. My review focuses on improving the clarity and robustness of the new script. I've pointed out a misleading experiment name that should be corrected for accurate tracking, and a potential issue with shadowing a standard shell variable which could affect script reliability.