Update the PerfXCloud provider model list，Update PerfXCloudProvider validate_provider_credentials method.

[BingGeX]

Checklist:

Important

Please review the checklist below before submitting your pull request.

• Please open an issue before creating a PR or link to an existing issue
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods

Description

Deprecated Model:Meta-Llama-3.1-405B-Instruct-AWQ-INT4,Meta-Llama-3-70B-Instruct-GPTQ-Int4,chatglm3-6b,Meta-Llama-3-8B-Instruct,Llama3-Chinese_v2,deepseek-v2-chat,deepseek-v2-lite-chat,Qwen2-72B-Instruct-GPTQ-Int4,Qwen2-7B,Qwen1.5-72B-Chat-GPTQ-Int4.Add Model:Qwen2.5-72B-Instruct,Qwen2.5-7B-Instruct,Yi-Coder-1.5B-Chat,Yi-Coder-9B-Chat,Qwen2-72B-Instruct-AWQ-int4,Yi-1_5-9B-Chat-16K,Qwen2-7B-Instruct,Reflection-Llama-3.1-70B,gte-Qwen2-7B-instruct.
Update PerfXCloudProvider: empty validate_provider_credentials method.

Fixes
Update the PerfXCloud provider model list，Update PerfXCloudProvider validate_provider_credentials method. #8586

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update, included: Dify Document
• Improvement, including but not limited to code refactoring, performance optimization, and UI/UX improvement
• Dependency upgrade

Testing Instructions

The program has been started and verified in the ui interface.