WebGPUTextureUtils: Fix check `layerUpdates` property (#33075)

src/renderers/webgpu/utils/WebGPUTextureUtils.js

@@ -538,7 +538,7 @@ class WebGPUTextureUtils {
 
 		} else if ( texture.isArrayTexture || texture.isDataArrayTexture || texture.isData3DTexture ) {
 
-			if ( texture.layerUpdates.size > 0 ) {
+			if ( texture.layerUpdates && texture.layerUpdates.size > 0 ) {
 
 				for ( const layerIndex of texture.layerUpdates ) {