Fixups https://github.com/zed-industries/zed/pull/20199 As mentioned in [the post-merge comment][1], the original change was wrong. The JetBrains IDEs use <kbd>⌥</kbd> (option) key on macOS for the shortcuts, which corresponds to the <kbd>alt</kbd> key in the keymap config. Release Notes: - Fixed extend/shrink selection in JetBrains keymap on macOS [1]: https://github.com/zed-industries/zed/pull/20199#issuecomment-2468136572