Use correct error name

Author: drewby

instrumentation-genai/opentelemetry-instrumentation-openai-v2/src/opentelemetry/instrumentation/openai_v2/patch.py

@@ -80,7 +80,7 @@ def traced_method(wrapped, instance, args, kwargs):
                 return result
 
             except Exception as error:
-                error_type = type(error).__name__
+                error_type = type(error).__qualname__
                 handle_span_exception(span, error)
                 raise
             finally:
@@ -138,7 +138,7 @@ async def traced_method(wrapped, instance, args, kwargs):
                 return result
 
             except Exception as error:
-                error_type = type(error).__name__
+                error_type = type(error).__qualname__
                 handle_span_exception(span, error)
                 raise
             finally: