[ark] kernel_info_request not getting kernel_info_reply

[rgbkrk]

I'm trying out the Ark kernel with my Zed PR (https://github.com/zed-industries/zed/pull/13625) and running into an issue with Ark no longer able to respond to execute_requests after a kernel_info_request is sent. Since it seems to work well in the classic Jupyter notebook, this is probably on my end. My shell socket is stuck waiting for a kernel_info_reply that never comes. Meanwhile I do get the status: busy and status: idle messages on the IOPUB channel. If I just don't send a KernelInfoRequest then all is well.