fix: build for melon

Author: omar-akermi

S1API/Products/ProductInstance.cs

@@ -3,7 +3,7 @@
 using S1Properties = Il2CppScheduleOne.Properties;
 #elif (MONOMELON || MONOBEPINEX || IL2CPPBEPINEX)
 using S1Product = ScheduleOne.Product;
-using Properties = ScheduleOne.Properties;
+using S1Properties = ScheduleOne.Properties;
 #endif
 using System.Collections.Generic;
 using S1API.Internal.Utils;