How can I bind a shortcut to open Keymap dialog without sidebar?

I want to open Keymap dialog without sidebar, just like Key Promoter X does it.

When I click on an apps name (like `Key Promoter X` or `Nx Dep Graph`) or a keyboard shortcut (if it is already defined) in the Key Promoter X notifications, I get a Keymap dialog that is the same in a in `Settings` → `Keymap`, however, there is no sidebar.

Now, I’d like to create a keyboard shortcut to open that dialog whenever I feel to tweak the shortcuts. Is it possible?

Thanks!