send_request: pass by_name=False on the TypeAdapter branch

Aligns with the class branch and the existing validate_python(..., by_name=False)
call sites in types/methods.py — wire data must use camelCase aliases only.

Author: maxisbey

src/mcp/client/session.py

@@ -313,7 +313,7 @@ async def send_request(
         except KeyError:
             pass
         if isinstance(result_type, TypeAdapter):
-            return result_type.validate_python(raw)
+            return result_type.validate_python(raw, by_name=False)
         return result_type.model_validate(raw, by_name=False)
 
     async def send_notification(self, notification: types.ClientNotification) -> None: