fix: 修复图片组件接受值为空时图片会覆盖图片

@@ -5,6 +5,7 @@
   import { ComponentPropsConfigType } from '../../../index.type';
   import { useDataFetch } from '../../../hook/socket/useSocket';
   import { DataFetchUpdateFn } from '../../../hook/socket/useSocket.type';
+  import { isNullOrUnDef } from '/@/utils/is';
 
   const props = defineProps<{
     config: ComponentPropsConfigType;
@@ -42,6 +43,7 @@
     const { data = {} } = message;
     const [latest] = data[attribute] || [];
     const [timespan, value] = latest;
+    if (isNullOrUnDef(value)) return;
     time.value = timespan;
     url.value = `${value}?timespan=${timespan}`;
   };