添加属性编辑器，调整自适应宽度布局

src/components/NestedFunction.vue

@@ -1,7 +1,7 @@
 <template>
   <ul class="drag-area" ref="el" style="margin: 0;">
     <li v-for="el in modelValue" :key="el.name">
-      <div style="width: 200px;border: 1px solid red;">
+      <div style="min-width: fit-content;border: 1px solid red;">
         <p>{{ el.name }}:{{ el.id }}</p>
       </div> 
       <nested-function v-model="el.children" />