Stop :Rg command

- [X] I have fzf 0.22.0 or above
- [X] I have read through https://github.com/junegunn/fzf.vim/blob/master/README.md
- [X] I have read through https://github.com/junegunn/fzf/blob/master/README-VIM.md
- [x] I have read through the manual page of fzf (`man fzf`)
- [X] I have searched through the existing issues

Hello,

I have seen that if I call ":Rg search_pattern" and I press Ctrl+C or ESC to exit from the search the rg process is not finishing and it's consumming cpu and I have to kill it.
If I execute only the :Rg the process finishes properly with Ctrl+C or ESC.

Also, if I open one of the results the process continues in background.

Which is the proper way to exit from the :Rg command?
I have reproduced it with the minimal configuration.