fix: from.options can be undefined, closes #1491

Author: Akryum

packages/app-backend-vue3/src/components/data.ts

@@ -355,12 +355,12 @@ function mergeOptions (
   from: any,
   instance: ComponentInstance
 ) {
-  if (!from) return to
-
   if (typeof from === 'function') {
     from = from.options
   }
 
+  if (!from) return to
+
   const { mixins, extends: extendsOptions } = from
 
   extendsOptions && mergeOptions(to, extendsOptions, instance)