♻️ refactor: Fix GitHub model fetch

[BrandonStudio]

Refactor OpenAICompatibleFactory

💻 变更类型 | Change Type

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

🔀 变更说明 | Description of Change

• Fix GitHub models method.
• Refactor models parameter of OpenAICompatibleFactory.

📝 补充信息 | Additional Information

Fix #4547 (3/3).

This PR should not be merged before #4260.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.48%. Comparing base (e1f6a3a) to head (3921ada).
Report is 93 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##             main    #4645     +/-   ##
=========================================
  Coverage   92.48%   92.48%             
=========================================
  Files         511      530     +19     
  Lines       36614    36972    +358     
  Branches     3388     2323   -1065     
=========================================
+ Hits        33862    34195    +333     
- Misses       2752     2777     +25     

Flag	Coverage Δ
app	92.48% <100.00%> (+<0.01%)	⬆️
server	96.17% <ø> (-1.10%)	⬇️

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