Add AsyncAuthedProvider in Copilot

Add orginal url to downloaded image
Support ssl argument in StreamSession
Report Provider and Errors in RetryProvider
Support ssl argument in OpenaiTemplate
Remove model duplication in OpenaiChat
Disable ChatGpt provider and remove it from models.py
Update slim requirements
Support provider names as model name in Image generation
Add model qwen-2.5-1m-demo to models.py

g4f/gui/server/backend_api.py

@@ -277,7 +277,8 @@ class Backend_Api(Api):
                     return Response(filter_markdown(response, do_filter_markdown), mimetype='text/plain')
                 def cast_str():
                     for chunk in response:
-                        yield str(chunk)
+                        if not isinstance(chunk, Exception):
+                            yield str(chunk)
                 return Response(cast_str(), mimetype='text/plain')
             except Exception as e:
                 logger.exception(e)