fix the max token of Tongyi-Qianwen text-embedding-v3 model to 8k

[hwzhuhao]

What problem does this PR solve?

Briefly describe what this PR aims to solve. Include background context that will help reviewers understand the purpose of the PR.

fix the max token of Tongyi-Qianwen text-embedding-v3 model to 8k

close #2117

Type of change

• [ ] Bug Fix (non-breaking change which fixes an issue)
• [ ] New Feature (non-breaking change which adds functionality)
• [ ] Documentation Update
• [ ] Refactoring
• [ ] Performance Improvement
• [ ] Other (please describe):