MacOS: add missing key mappings

[enen92]

Description

This adds a few missing NS* to XBMCK key mappings. A few more might still be missing but let's add them as they are actually requested.

Motivation and context

Fixes #24544 for omega/master. It looks like it was broken between 20.2 and 20.3 but I've really no interest to dig into it as we've replaced the windowing implementation altogether for v21.

How has this been tested?

Runtime tested with the keymap provided in the issue report

What is the effect on users?

Restore functionality for some edge cases - keymaps

Screenshots (if appropriate):

Types of change

• Bug fix (non-breaking change which fixes an issue)
• Clean up (non-breaking change which removes non-working, unmaintained functionality)
• Improvement (non-breaking change which improves existing functionality)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that will cause existing functionality to change)
• Cosmetic change (non-breaking change that doesn't touch code)
• Student submission (PR was done for educational purposes and will be treated as such)
• None of the above (please explain below)