fix(formatter): support to extract image extensions from URL with query parameters (#1066)

Author: qbc2016

src/agentscope/formatter/_openai_formatter.py

@@ -86,7 +86,8 @@ def _to_openai_image_url(url: str) -> str:
 
     # Web url
     if not os.path.exists(url) and parsed_url.scheme != "":
-        if any(lower_url.endswith(_) for _ in support_image_extensions):
+        path_lower = parsed_url.path if parsed_url.path else parsed_url.netloc
+        if any(path_lower.endswith(_) for _ in support_image_extensions):
             return url
 
     # Check if it is a local file