Exclude DebugJsonDir plugin from release scope

- DebugJsonDir includes DDS/Core/function_reply_object.h
- Excluded when RELEASE_BUILD=ON

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

qt6-after/qt6-migrated-legatus/Lts/Proxies/TrainingAreaBase/Plugins/CMakeLists.txt

@@ -4,7 +4,7 @@
 # $Author$
 #
 
-IF (NOT BUILD_RPM)
+IF (NOT BUILD_RPM AND NOT RELEASE_BUILD)
   ADD_SUBDIRECTORY(DebugJsonDir)
 ENDIF()