Fix issues where screen and window sizes contained Pixels, but were declared as DevicePixels (#12991)

On most platforms, things were working correctly, but had the wrong
type. On X11, there were some problems with window and display size
calculations.

Release Notes:

- Fixed issues with window positioning on X11

---------

Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>
Co-authored-by: Mikayla <mikayla@zed.dev>

crates/gpui/src/platform/linux/wayland/client.rs

@@ -557,7 +557,7 @@ impl LinuxClient for WaylandClient {
                 Rc::new(WaylandDisplay {
                     id: id.clone(),
                     name: output.name.clone(),
-                    bounds: output.bounds,
+                    bounds: output.bounds.to_pixels(output.scale as f32),
                 }) as Rc<dyn PlatformDisplay>
             })
             .collect()
@@ -573,7 +573,7 @@ impl LinuxClient for WaylandClient {
                     Rc::new(WaylandDisplay {
                         id: object_id.clone(),
                         name: output.name.clone(),
-                        bounds: output.bounds,
+                        bounds: output.bounds.to_pixels(output.scale as f32),
                     }) as Rc<dyn PlatformDisplay>
                 })
             })