[Bugfix] Fix benchmark_moe.py

[gty111]

Fix some errors in benchmark_moe.py

• Replace List to list to solve NameError: name 'List' is not defined. Did you mean: 'list'?
• Remove SimpleNamespace to solve TypeError: types.SimpleNamespace() argument after ** must be a mapping, not Qwen3MoeConfig

@houseroad

[github-actions]

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