Fix/3472 keyboard shortcuts display incorrectly

[softwarenerd]

This PR addresses #3472.

Prior to this PR, each character in a custom context menu shortcut was being displayed with a letter-spacing of .2rem. This resulted in incorrect display of custom context menu shortcuts on Windows and Linux:

Now, on macOS, custom context menu shortcuts are adjusted such that ⇧, ⌥, and ⌘ are displayed with a trailing space by this code:

label = label.replace('⇧', '⇧ ');
label = label.replace('⌥', '⌥ ');
label = label.replace('⌘', '⌘ ');

Here's a screenshot of this in action:

With this change, our custom context menu shortcuts now match system context menu shortcuts on macOS:

And on Windows and Linux:

QA Notes

None.