fix 修复 请假日期选择格式不对问题

src/views/workflow/leave/leaveEdit.vue

@@ -23,10 +23,12 @@
         <el-form-item label="请假时间">
           <el-date-picker
             v-model="leaveTime"
+            value-format="YYYY-MM-DD HH:mm:ss"
             type="daterange"
             range-separator="To"
             start-placeholder="开始时间"
             end-placeholder="结束时间"
+            :default-time="[new Date(2000, 1, 1, 0, 0, 0), new Date(2000, 1, 1, 23, 59, 59)]"
             @change="changeLeaveTime()"
           />
         </el-form-item>