[Win] I can only use ctrl-d to exit

Here is what the ipython.config.py says:

```
## Set to confirm when you try to exit IPython with an EOF (Control-D in Unix,
# Control-Z/Enter in Windows). By typing 'exit' or 'quit', you can force a
# direct exit without any confirmation.
#c.TerminalInteractiveShell.confirm_exit = True
```

But in my case it is ctrl-d that actually works for ipython:


For python, I use ctrl-z:


## Environment

* Win10 2004 x64
* Python 3.9 beta from MS Store
* IPython 7.15