Add window wrapper for safe GLFW tests

[Jacalz]

Checklist

• I have searched the issue tracker for open issues that relate to the same feature, before opening a new one.
• This issue only relates to a single feature. I will open new issues for any other features.

Is your feature request related to a problem?

See discussion in #5372 (comment). We need to be extra careful when running the GLFW tests compared to the regular test runner. Instead of manually using the safe functions, it would be good to have them called automatically.

Is it possible to construct a solution with the existing API?

Yes

Describe the solution you'd like to see.

To make sure that we consistently use these safe functions and do not regress, we should try to implement a sort of wrapper around a regular window that extends methods and calls parent methods safely.