Respect user's font-smoothing setting (#38467)

#37622 was incorrectly forcing font smoothing to be enabled on macos
even when the user had disabled that setting at the OS level. See [this
comment](https://github.com/zed-industries/zed/pull/37622#issuecomment-3310030659)
for an example of the difference that font smoothing makes.

Release Notes:

- N/A
166b2352f3Julia Ryan committed on 9/19/2025, 12:21:42 AM· committed by GitHubparentf18b19a
1 file changedLine totals unavailable