refactor(pages-sell): 简化专题推荐数据获取逻辑

移除对单排和双排专题推荐的单独处理，直接使用后端返回的'topic'位置数据

pages-sell/components/sell-container/index.vue

@@ -217,17 +217,9 @@
 						this.categoryList = res.data.find(item => item.position == 'diamond_area')?.shopIndexCateVo || []
 						this.swiperList = res.data.find(item => item.position == 'left_banner')?.shopIndexCateVo || []
 						this.bookList = res.data.find(item => item.position == 'right_banner')?.shopIndexCateVo || []
-
-						//获取单排专题推荐
-						let single_row_topic = res.data.find(item => item.position == 'single_row_topic')?.shopIndexCateVo || []
-						single_row_topic.forEach(item => item.positionType = 'single_row_topic')
-						
-						//获取双排专题推荐
-						let double_row_topic = res.data.find(item => item.position == 'double_row_topic')?.shopIndexCateVo || []
-						double_row_topic.forEach(item => item.positionType = 'double_row_topic')
-						
-						this.topicList = [...single_row_topic, ...double_row_topic]
-						console.log(this.topicList)
+				
+						//获取专题推荐
+						this.topicList = res.data.find(item => item.position == 'topic')?.shopIndexCateVo || []
 					}
 				})
 			},