Corrected preventDefault with mousewheel in PixiJS List.

lib/pixi/list.js

@@ -107,11 +107,11 @@ export default class List extends PIXI.Container {
         if (this.opts.app) {
             const app = this.opts.app
             app.view.addEventListener('mousewheel', event => {
-                event.preventDefault()
                 const bounds = this.mask ? this.mask.getBounds() : this.getBounds()
                 const x = event.clientX - app.view.getBoundingClientRect().left
                 const y = event.clientY - app.view.getBoundingClientRect().top
                 if (bounds.contains(x, y)) {
+                    event.preventDefault()
                     this.emit('scroll', event)
                 }
             })