fix: 修复表格列设置下拉框中偶现列数据区域空白 (#1958) (#1981)

Co-authored-by: 舒培培 <622292@ky-tech.com.cn>

src/components/Table/src/components/settings/ColumnSetting.vue

@@ -182,10 +182,12 @@
       });
 
       watchEffect(() => {
+        setTimeout(() => {
           const columns = table.getColumns();
           if (columns.length && !state.isInit) {
             init();
           }
+        }, 0);
       });
 
       watchEffect(() => {