Update test_scenarios.py

Author: beacoder

tests/test_scenarios.py

@@ -62,6 +62,7 @@ def chat(
         stream=True,
         cancel_check=None,
         on_retry=None,
+        supports_image_input=False,
     ):
         self.calls.append([m.to_api() for m in messages])
         if not self.script: