Take 2 on https://github.com/zed-industries/zed/pull/26600. Now, it
doesn't break remote development.

Instead of using it in `build_classes`, it's now used in the `open`
method while creating a window. I found similar usage in other places
over internet.

Release Notes:

- Fixed issue where Zed would show mac native tabs when opening new
fullscreen windows on macOS.