don't try to serialiaze binary data like images

[wjquigsAZ]

Issue #, if available:
The playground attempts to save responses from the model, but some of the responses contain binary data that is not json serializable.
Description of changes:
Added changes to omit binary data.

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[manoj-selvakumar5]

Hi @wjquigsAZ Thanks for the contribution! Instead of discarding the binary data, is there a way you can help us preserve that information while making it serializable?

[wjquigsAZ]

You could base64 encode it, but I'm not sure how useful that would be. Also, you would probably want to limit the size of a b64-encoded response. In my application, the agent is responding with images, so having the actual image data in the response doesn't work for me. Instead I created a response object with a URL to the image.