Don't require unnecessary OS permissions on MacOS

[vergilfromadyen]

Purpose

Makes it so that disabling screenshots doesn't trigger a permission request for screen recording on MacOS Monterey. This lets users who don't have access to changing permissions still use TestCafe when the permission is not necessary.

Approach

Changes the validateBrowsers method to not request extra permissions when screenshots are disabled on MacOS

References

Resolves #7019.

I'm sorry I couldn't update the tests but they don't seem to pass with or without my changes as noted in #7029. This also meant I couldn't really write test-cases.

[github-actions]

Thank you for your contribution to TestCafe. We will review this PR.

[AndreyBelym]

Thank you for your contribution. I discussed the related issues with the team and there are some things we should discuss before accepting this PR and reviewing it.

First of all, the Screen Recording permission isn't the only permission required to run TestCafe on macOS. When TestCafe starts a browser, the OS will ask a user for the Automation permission. Without it, we cannot even open a Safari window without it: https://github.com/DevExpress/testcafe-browser-tools/blob/88b97b77e583d79088ea6b5a48c9c5f75d41711e/src/natives/open/mac/open.m#L15

It is also required for window management tasks in all browsers (focusing, resizing) and querying some system information (like the size of a browser window).

So since avoiding the Screen Recording permission only won't help you much, we do not plan to accept this PR for now. We also do not intend to introduce additional flags to disable additional functionality, since the disabled functionality could be critical for TestCafe (like opening Safari windows). We think that the most viable approach is using the Safari WebDriver and native browser debugging protocols to control browsers on macOS. But since it will require a lot of time for research and implementation, we cannot give any estimates about this feature for now.