ladybird UI/AppKit: Use round rect bezel style on older SDKs

This fixes #1378 by adding a fallback for a bezel style that is unavailable in older macOS SDK versions.

Oct 26 '24 23:10 fwcd

What's the reasoning for supporting 3+ year old versions of macOS?

Oct 27 '24 09:10 awesomekling

I was mostly just looking for some minor issue to contribute 😄

The sentiment in the aforementioned issue sounded like that was desired and apparently this was the only blocker to compiling Ladybird on macOS 12.

Oct 27 '24 10:10 fwcd

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed in 7 days if no further activity occurs. Thank you for your contributions!

Dec 07 '24 21:12 github-actions[bot]

This pull request has been closed because it has not had recent activity. Feel free to re-open if you wish to still contribute these changes. Thank you for your contributions!

Dec 15 '24 02:12 github-actions[bot]