Refactor catalog mapping and update logic

Removed ReverseMap from CatalogProfile for one-way mapping. Refactored UpdateAsync in CatalogRepository: eliminated existence check, set @GUID as input only, removed output handling, and simplified return logic.

DbFirst.Application/Catalogs/CatalogProfile.cs

@@ -7,7 +7,7 @@ public class CatalogProfile : Profile
 {
     public CatalogProfile()
     {
-        CreateMap<VwmyCatalog, CatalogReadDto>().ReverseMap();
+        CreateMap<VwmyCatalog, CatalogReadDto>();
         CreateMap<CatalogWriteDto, VwmyCatalog>();
     }
 }