Closes #12313 This PR introduces the following improvements: 1. Fixed the issue where the auto-hide taskbar wouldn't automatically appear when Zed is maximized. 2. Refactored the `WM_NCCALCSIZE` code, making it more human-readable. Release Notes: - Fixed auto-hide taskbar would refuse to show itself when `Zed` is maximized on Winodws([#12313](https://github.com/zed-industries/zed/issues/12313)). --------- Co-authored-by: Mikayla Maki <mikayla@zed.dev>