gpui: Improve window.prompt to support ESC with non-English cancel text on macOS (#29538)

Release Notes:

- N/A

----

The before version GPUI used `Cancel` for cancel text, if we use
non-English text (e.g.: "取消" in Chinese), then the press `Esc` to cancel
will not work.

So this PR to change it by use `PromptButton` to instead the `&str`,
then we can use `PromptButton::cancel("取消")` for the `Cancel` button.

Run `cargo run -p gpui --example window` to test.

---

Platform Test:

- [x] macOS
- [x] Windows
- [x] Linux (x11 and Wayland)

---------

Co-authored-by: Mikayla Maki <mikayla@zed.dev>
Co-authored-by: Mikayla Maki <mikayla.c.maki@gmail.com>

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

@@ -29,8 +29,8 @@ use crate::platform::{
 use crate::scene::Scene;
 use crate::{
     AnyWindowHandle, Bounds, Decorations, Globals, GpuSpecs, Modifiers, Output, Pixels,
-    PlatformDisplay, PlatformInput, Point, PromptLevel, RequestFrameOptions, ResizeEdge,
-    ScaledPixels, Size, Tiling, WaylandClientStatePtr, WindowAppearance,
+    PlatformDisplay, PlatformInput, Point, PromptButton, PromptLevel, RequestFrameOptions,
+    ResizeEdge, ScaledPixels, Size, Tiling, WaylandClientStatePtr, WindowAppearance,
     WindowBackgroundAppearance, WindowBounds, WindowControls, WindowDecorations, WindowParams, px,
     size,
 };
@@ -862,7 +862,7 @@ impl PlatformWindow for WaylandWindow {
         _level: PromptLevel,
         _msg: &str,
         _detail: Option<&str>,
-        _answers: &[&str],
+        _answers: &[PromptButton],
     ) -> Option<Receiver<usize>> {
         None
     }