fix(webgpu) Fill default viewport depth if not provided (#2362)

Author: Kaapp

modules/webgpu/src/adapter/resources/webgpu-render-pass.ts

@@ -148,8 +148,8 @@ export class WebGPURenderPass extends RenderPass {
         viewport[1],
         viewport[2],
         viewport[3],
-        viewport[4] as any,
-        viewport[5] as any
+        viewport[4] ?? 0,
+        viewport[5] ?? 1
       );
     }
   }