windows: Show error messages when zed failed to lanuch (#32537)

Now, if either `WindowsPlatform` or `BladeRenderer` fails to initialize,
a window will pop up to notify the user.


![image](https://github.com/user-attachments/assets/40fe7f1d-5218-4ee2-b4ec-0945fed2b743)


Release Notes:

- N/A

crates/gpui/src/platform/blade/blade_renderer.rs

@@ -342,7 +342,7 @@ impl BladeRenderer {
         let surface = context
             .gpu
             .create_surface_configured(window, surface_config)
-            .unwrap();
+            .map_err(|err| anyhow::anyhow!("Failed to create surface: {err:?}"))?;
 
         let command_encoder = context.gpu.create_command_encoder(gpu::CommandEncoderDesc {
             name: "main",