fix：弹框修改协议时，已经选择要清空

frontend/src/components/device_communication/EditDialog.vue

@@ -14,7 +14,7 @@
         <el-input v-model="form.station_id" autocomplete="false" />
       </el-form-item>
       <el-form-item label="协议名称" :label-width="formLabelWidth" prop="protocol_name">
-        <el-select v-model="form.protocol_name" @change="handleProtocolChange">
+        <el-select v-model="form.protocol_name" @change="handleProtocolChange(form.protocol_name, [])">
           <el-option v-for="protocolName in store.protocolNames" :label="protocolName.label" :value="protocolName.value" />
         </el-select>
       </el-form-item>
@@ -145,7 +145,7 @@ watch(() => props.isShow, () => {
       udp_port_dst: props.deviceInfo!.udp_port_dst,
     }
     handleModeChange(form.value.communicate_mode)
-    handleProtocolChange(form.value.protocol_name)
+    handleProtocolChange(form.value.protocol_name, checked_performance_fields.value)
     checked_performance_fields.value = props.deviceInfo!.checked_performance_fields!
   }
 })
@@ -209,10 +209,11 @@ const rules = reactive<FormRules<typeof form>>({
 })
 
 // 下拉框选择触发的事件
-const handleProtocolChange = (protocol_name: string) => {
+const handleProtocolChange = (protocol_name: string, checked_fields: string[]) => {
   axios.get('/api/device_communication/protocol_performance/' + protocol_name + '/')
     .then((res) => {
       performance_fields.value = res.data
+      checked_performance_fields.value = checked_fields
     })
     .catch((err) => {
       console.log(err);