Keybinding not working in IntelliJ embedded terminal

Hi,

I tried to add the `bindkey '^[[Z' autosuggest-accept ` to make shift+tab work like the right arrow key to accept the suggestions. I tried type that directly and also added that into my .zshrc files. I'm using zsh with the Mac built-in terminal. It turns out it worked fine if I opened a regular terminal window but not working at all in the IntelliJ embedded terminal window.
Any idea what might be wrong?

Thanks!