message: fix(NumberKeyboard): avoid Vue 2.6 event bubble issues
diff: @@ -38,6 +38,10 @@ export default createComponent({
  }
  },
  + mounted() {
  + this.bindTouchEvent(this.$el);
  + },
  +
  methods: {
  onTouchStart(event) {
  // compatible with Vue 2.6 event bubble bug
  @@ -65,15 +69,7 @@ export default createComponent({
  render() {
  return (
  - <i
  - role="button"
  - tabindex="0"
  - class={[BORDER, this.className]}
  - onTouchstart={this.onTouchStart}
  - onTouchmove={this.onTouchMove}
  - onTouchend={this.onTouchEnd}
  - onTouchcancel={this.onTouchEnd}
  - >
  + <i role="button" tabindex="0" class={[BORDER, this.className]}>
  {this.slots('default') || this.text}
  </i>
  );
  