Examples: Clean up.

examples/webgpu_pmrem_cubemap.html

@@ -50,6 +50,8 @@
 				renderer.setAnimationLoop( render );
 				renderer.toneMapping = THREE.ACESFilmicToneMapping;
 
+				await renderer.init();
+
 				container.appendChild( renderer.domElement );
 
 				const controls = new OrbitControls( camera, renderer.domElement );

examples/webgpu_pmrem_equirectangular.html

@@ -50,6 +50,8 @@
 				renderer.setAnimationLoop( render );
 				renderer.toneMapping = THREE.ACESFilmicToneMapping;
 
+				await renderer.init();
+
 				container.appendChild( renderer.domElement );
 
 				const controls = new OrbitControls( camera, renderer.domElement );

examples/webgpu_pmrem_test.html

@@ -58,6 +58,8 @@
 				renderer.toneMapping = THREE.ACESFilmicToneMapping;
 				renderer.toneMappingExposure = 1;
 
+				await renderer.init();
+
 				document.body.appendChild( renderer.domElement );
 
 				window.addEventListener( 'resize', onWindowResize );