Fix: Wrap MacroCodeGenIdl include in RELEASE_BUILD conditional

- Main CMakeLists.txt line 783 includes MacroCodeGenIdl.cmake unconditionally
- This causes ngl_codegen target reference even when CodeGen module is excluded
- Wrap INCLUDE(MacroCodeGenIdl) in IF(NOT RELEASE_BUILD) to skip for release builds
- Prevents 'make: *** No rule to make target ngl_codegen' error in release scope builds

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

qt6-after/qt6-migrated-legatus/CMakeLists.txt

@@ -780,7 +780,10 @@ ENDIF()
 # Ein paar NGL-spezifische Macros
 #
 INCLUDE(NGLMacros)
-INCLUDE(MacroCodeGenIdl)
+# Skip MacroCodeGenIdl for release builds as CodeGen module is excluded
+IF(NOT RELEASE_BUILD)
+  INCLUDE(MacroCodeGenIdl)
+ENDIF()
 
 #
 # Projektspezifische Einstellungen?