🐛 fix: improve validation for provider and model in parseFilesConfig

[cookieY]

💻 变更类型 | Change Type

• ✨ feat
• 🐛 fix
• ♻️ refactor
• 💄 style
• 👷 build
• ⚡️ perf
• 📝 docs
• 🔨 chore

🔀 变更说明 | Description of Change

隐藏对未实现的rerank 及 query_mode的校验逻辑，解决现有配置参数无法通过校验的问题

• fix [Bug] can't embed files to knowledge base #5463
• fix [Bug] 智谱Embedding模型 提示向量化失败 #5452

📝 补充信息 | Additional Information

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[codecov]

Codecov Report

Attention: Patch coverage is 80.95238% with 4 lines in your changes missing coverage. Please review.

Project coverage is 92.93%. Comparing base (b11d08e) to head (912e42d).
Report is 10 commits behind head on main.

Files with missing lines	Patch %	Lines
src/server/globalConfig/parseFilesConfig.ts	78.94%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5454      +/-   ##
==========================================
- Coverage   92.95%   92.93%   -0.02%     
==========================================
  Files         635      636       +1     
  Lines       55507    55565      +58     
  Branches     4019     4113      +94     
==========================================
+ Hits        51595    51640      +45     
- Misses       3912     3925      +13     

Flag	Coverage Δ
app	92.93% <80.95%> (-0.02%)	⬇️
server	?

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