Keybinding for zooming out not working for Number Pad keys

### Expected Behavior

Looking at *View -> Zoom Out*, I should be able to zoom out with `Ctrl + -`.

### Actual Behavior

Nothing happens for both the dash and the minus of the numpad of my keyboard.
Zooming in with `Ctrl + =` is working just fine.

### Reproduction Steps

Hit `Ctrl + -`

### Is there an existing issue for this?

- [X] I have searched the [issue tracker](https://www.github.com/Kong/insomnia/issues) for this problem.

### Additional Information

On a general note: I find these keybindings super unintuitive. Virtually *any* other application that I am using (any browser, VSCode, Postman, ...) is using `Ctrl + +` for zooming in and `Ctrl + -` for zooming out. It would be great if this could be changed

### Insomnia Version

2022.6.0

### What operating system are you using?

Windows

### Operating System Version

Windows 10

### Installation method

portable version

### Last Known Working Insomnia version

_No response_

Start by reproducing the View → Zoom Out shortcut on Windows 10 with Insomnia 2022.6.0, testing both the standard dash and numpad minus keys. Trace the desktop keybinding handling for Ctrl + minus; done means both keys zoom out consistently while the existing zoom-in shortcut continues to work.

Written by the indexing model from the issue text.