Fix: Port to macOS 15.5 (Sequoia) – clang++ compatibility, std::swap,…

[saltorico]

Sequoia port for MacOs15.5

1. Added Methods
   File: dmattributevar.h

   • Added method:

     template <class T>
     inline const DmElementHandle_t& CDmaElement<T>::Data() const {
         return Value();
     }

   • Purpose: fix compatibility error caused by missing Data() method; correctly uses Value() as return type.

2. Replacement of std::swap
   File: ./public/tier1/utlblockmemory.h

   • Replaced instance of this->swap( with std::swap( without changing arguments or logic.