Brice Chung

sk_function.invoke_async(input=context) seems to have an empty prompt

2

**Describe the bug** When running this [sample](https://github.com/microsoft/semantic-kernel/blob/main/samples/notebooks/python/04-context-variables-chat.ipynb), the notebook cell below always returns `Hi there! What would you like to talk about?` as if the prompt is empty no matter...