Add GROUP5 build configuration and CTest registration for Viewer module

- Add GROUP5_TARGETS array with 7 Viewer module targets to new_docker_build.sh
- Add BUILD_GRANTLEE support throughout build script (help, env vars, cmake invocation)
- Fix duplicate BUILD_GROUP4 default in container script section
- Register LtsDataViewTest with CTest in LtsDataView/CMakeLists.txt
- Register LtsFileDialogTest with CTest in LtsFileDialog/CMakeLists.txt
- Update help text to document --group5/--no-group5 and --grantlee/--no-grantlee options
- Set BUILD_GROUP5=OFF and BUILD_GRANTLEE=ON as defaults

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

qt6-after/qt6-migrated-legatus/Lts/Viewer/LtsFileDialog/CMakeLists.txt

@@ -80,3 +80,8 @@ if(QT6_GUI_AVAILABLE)
       ${Qt6_Widgets}
   )
 endif()
+
+# Register test with CTest
+if(BUILD_TESTING)
+  add_test(NAME LtsFileDialogTest COMMAND $<TARGET_FILE:LtsFileDialogTest>)
+endif()