date类型的字段如果设置了必填，选择日期后仍然提示请输入日期

schema 定义

        "plan_date": {  
            "bsonType": "date",  
            "title": "计划日期",  
            "componentForEdit": {  
                "name": "uni-datetime-picker",  
                "props": {  
                    "type": "date"  
                }  
            }  
        },

生成的代码

   <uni-forms-item name="plan_date" label="计划日期" required>  
        <uni-datetime-picker type="date" return-type="date" v-model="formData.plan_date"></uni-datetime-picker>  
      </uni-forms-item>

页面显示结果 见附件