Migrates remaining services and plugins to generated rtiddsgen API

Converts accessor calls to plain member access across the residual service set.

qt6-after/qt6-migrated-legatus/Lts/Services/GuezIedManagement/gim_dtc_impl_custom.cpp

@@ -17,7 +17,7 @@ Ied DtcImplCustom::iedForEquipmentNumber(int equipmentNumber) const
 {
   for (const auto &ied : m_iedCont)
   {
-    if (ied.equipmentNumber() == equipmentNumber)
+    if (ied.equipmentNumber == equipmentNumber)
       return ied;
   }
   return {};