Open new windows with a default size and position (#9204)

This PR changes GPUI to open windows with a default size and location,
and to otherwise inherit from their spawning window.

Note: The linux build now crashes on startup.

Release Notes:

- N/A

---------

Co-authored-by: Nathan <nathan@zed.dev>
Co-authored-by: Ezekiel Warren <zaucy@users.noreply.github.com>

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

@@ -39,11 +39,12 @@ use crate::platform::linux::client::Client;
 use crate::platform::linux::wayland::cursor::Cursor;
 use crate::platform::linux::wayland::window::{WaylandDecorationState, WaylandWindow};
 use crate::platform::{LinuxPlatformInner, PlatformWindow};
+use crate::WindowParams;
 use crate::{
     platform::linux::wayland::window::WaylandWindowState, AnyWindowHandle, CursorStyle, DisplayId,
     KeyDownEvent, KeyUpEvent, Keystroke, Modifiers, ModifiersChangedEvent, MouseButton,
     MouseDownEvent, MouseMoveEvent, MouseUpEvent, NavigationDirection, Pixels, PlatformDisplay,
-    PlatformInput, Point, ScrollDelta, ScrollWheelEvent, TouchPhase, WindowOptions,
+    PlatformInput, Point, ScrollDelta, ScrollWheelEvent, TouchPhase,
 };
 
 /// Used to convert evdev scancode to xkb scancode
@@ -207,10 +208,14 @@ impl Client for WaylandClient {
         unimplemented!()
     }
 
+    fn primary_display(&self) -> Option<Rc<dyn PlatformDisplay>> {
+        None
+    }
+
     fn open_window(
         &self,
         handle: AnyWindowHandle,
-        options: WindowOptions,
+        options: WindowParams,
     ) -> Box<dyn PlatformWindow> {
         let mut state = self.state.client_state_inner.borrow_mut();