KERNEL-13489 fix: button 的缩写改成箭头函数

src/base/single/button/buttons/button.js

@@ -76,7 +76,7 @@
                 type: "bi.center_adapt",
                 horizontalAlign: o.textAlign,
                 element: this,
-                ref(ref) {
+                ref: (ref) => {
                     self.containerRef = ref;
                 },
                 hgap: o.hgap,
@@ -167,7 +167,7 @@
                 tgap: o.iconPosition === "top" ? o.iconGap : 0,
                 bgap: o.iconPosition === "bottom" ? o.iconGap : 0,
             };
-            
+
             var items = [this.icon, BI.extend({ el: this.text }, gapContainer)];
             if (o.iconPosition === "right" || o.iconPosition === "bottom") {
                 items.reverse();