fix(tallyReceive): 修改D/C编码字段名称及相关逻辑

- 将D/C编码字段名称从dc_code更改为date_code，以保持一致性
- 更新相关逻辑，确保在提交时正确验证date_code的必填状态
- 清空表单时同步更新字段名称，提升代码可读性

pages/tallyReceive/index.vue

@@ -224,7 +224,7 @@
                     </view>
                     <view class="h2" v-else>D / C：</view>
                     <view class="dc-input-box">
-                        <input class="uni-input" :placeholder="is_dc_required ? '请输入D/C，该项必填' : '请输入D/C'" placeholder-style="color:#919399" v-model="formParams.dc_code" />
+                        <input class="uni-input" :placeholder="is_dc_required ? '请输入D/C，该项必填' : '请输入D/C'" placeholder-style="color:#919399" v-model="formParams.date_code" />
                     </view>
                     <view class="h2 row bothSide verCenter" style="margin-top: 25rpx;">
                         <view>
@@ -314,7 +314,7 @@
                     tally_remark: '',
                     image_ids: '', //理货照片集合
                     is_print: 1,
-                    dc_code: '' //D/C编码
+                    date_code: '' //D/C编码
                 },
                 fastParams: {
                     flag: '',
@@ -808,7 +808,7 @@
              */
             createTallyReceiveSubmit() {
                 // 验证D/C是否必填
-                if (this.is_dc_required && !this.formParams.dc_code) {
+                if (this.is_dc_required && !this.formParams.date_code) {
                     uni.showToast({
                         title: '该理货任务D/C必填，请输入D/C',
                         icon: 'none',
@@ -831,7 +831,7 @@
                     tally_remark: this.formParams.tally_remark,
                     image_ids: this.formParams.image_ids,
                     is_print: this.formParams.is_print,
-                    dc_code: this.formParams.dc_code,
+                    date_code: this.formParams.date_code,
                     stock_in_item_id: this.filter_id.join(',')
                 };
                 this.request(API.createTallyReceive, 'POST', params, true).then(res => {
@@ -896,7 +896,7 @@
                 this.server_image_list = []; //清空服务器图片列表
                 this.formParams.image_ids = ''; //每次打开先清空图片集合
                 this.formParams.tally_remark = ''; //每次打开先清空理货备注
-                this.formParams.dc_code = ''; //每次打开先清空D/C
+                this.formParams.date_code = ''; //每次打开先清空D/C
                 this.$refs.showRight.open();
             },
             /**