fix some bugs

[Difers]

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• Lint code. If there are lint issues, please format the code first.

# Install and register `pre-commit` in the project folder
pip install pre-commit && pre-commit install

# Process previous code files separately
pre-commit run --file XXXX.py

• Add test cases into tests folder. If there are codecov issues, please add tests cases first.

PR types

PR changes

Description

• 修改MoEFlexTokenLayer expert为全局
• 修复mtp layer中concat错误
• 修复moe-gating，暂时忽略noaux_tc（问题待查）

[paddle-bot]

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