perf:修改页面

base-manager-ui/admin/src/pages/basicset/appmarket/modal/AddField.vue

 <template>
   <div>
-    <a-modal :width="750" v-model="Visible" title="新增数据字段">
+    <a-modal
+      :width="750"
+      v-model="Visible"
+      title="新增数据字段"
+      @cancel="handleCancel"
+    >
       <a-form-model
         :model="form"
         ref="form"
@@ -323,7 +328,7 @@ export default {
       this.$refs.form.validate(async (valid) => {
         if (valid) {
           let bol = this.templeteList.some((v) => v.fieldType == "table");
-          if (bol) {
+          if (bol && !this.form.id) {
             this.$message.warn("只能存在一个表格");
             return;
           }