Do not update style.width and style.height on renderer resize to not override styles applied externally (fix #3160) (#3184)

Author: dmarcos

src/core/scene/a-scene.js

@@ -468,7 +468,7 @@ module.exports.AScene = registerElement('a-scene', {
         camera.aspect = size.width / size.height;
         camera.updateProjectionMatrix();
         // Notify renderer of size change.
-        this.renderer.setSize(size.width, size.height);
+        this.renderer.setSize(size.width, size.height, false);
       },
       writable: window.debug
     },