fix: filters dict格式两处都兼容，避免第二处iter string报错

pricing/pricing.py

@@ -673,7 +673,14 @@ order by b.enabled_date desc"""
 				
 				# 处理 filters 中的区间定价（查找匹配的 unit_prices）
 				if 'filters' in p:
-					for filter_item in p['filters']:
+					raw_filters2 = p['filters']
+					if isinstance(raw_filters2, dict):
+						filter_items2 = [raw_filters2]
+					else:
+						filter_items2 = raw_filters2
+					for filter_item in filter_items2:
+						if not isinstance(filter_item, dict):
+							continue
 						item_value_mode = filter_item.get('value_mode')
 						for fk, fv in filter_item.items():
 							if fk in ('unit_prices', 'value_mode'):