webgpu: Update to wgpu 0.20 (#32173)

* Update wgpu to 0.20

* good expectations

* Throw TypeError in configure on unsupported format instead of panic

* Expect

* `into_command_buffer_id`,`into_command_encoder_id`

components/script/dom/gpubuffer.rs

@@ -268,7 +268,8 @@ impl GPUBufferMethods for GPUBuffer {
                 buffer_id: self.buffer.0,
                 device_id: self.device.id().0,
                 host_map,
-                map_range: map_range.clone(),
+                offset,
+                size: Some(range_size),
             },
         )) {
             warn!(