Fix tabs issue with hy-box

src/components/hy-tabs/hy-tabs.tsx

@@ -57,7 +57,8 @@ export class HyTabs implements ComponentInterface {
       }
     }
 
-    const tabContainer = this.el.children[0];
+    const tabContainer = this.el.querySelector('.hy-tabs__container') as any;
+
     if (tabContainer) {
       this.generateArrays(tabContainer);