Fix: type violations. (#6262)

### What problem does this PR solve?

#6238
### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

rag/utils/__init__.py

@@ -100,7 +100,7 @@ def clean_markdown_block(text):
     return text.strip()
 
   
-def get_float(v: str | int | float | None):
+def get_float(v):
     if v is None:
         return float('-inf')
     try: