Check guiApplications=false when diagnosing 'cannot open display'

[intotecho]

Is your feature request related to a problem:

For the page
https://github.com/microsoft/wslg/wiki/Diagnosing-%22cannot-open-display%22-type-issues-with-WSLg

Add a section to check c:/$Users/.wslconfig
If this variable is set, then the app may crash and no X11 is will be running.

guiApplications=false

I had crashes on gitkraken gitkraken-amd64.deb on Ubuntu24.02. This was the cause,

Describe the solution you'd like:

Update the document for other users.

Describe alternatives you've considered:

n/a

Additional context:

No response