Added max lines and overflow scrollbar for `gr.Code` (#9311)
* add max lines for gr.Code
* add changeset
* revert default lines to 5
* fix tests
* lint
---------
Co-authored-by: Abubakar Abid <abubakar@huggingface.co>
Co-authored-by: gradio-pr-bot <gradio-pr-bot@users.noreply.github.com>
