Driver: fix broken backslash continuation in DEB call, pass GUEZ_MODE to container

Run 3 exposed two driver bugs in the DEB step:
- A '#' comment line placed inside the backslash-continued python3
  invocation terminated the logical command early: python ran without
  --cmake_build_flags (hence the empty cmake flags and the recurring
  pdm_enums.hpp failure) and bash then tried to execute
  '--cmake_build_flags' as a command (exit 127). Moved the comment
  above the statement.
- GUEZ_MODE was defaulted on the host but never passed to the container
  (-e GUEZ_MODE missing), so the DEB cmake flags expanded -DGUEZ_MODE=
  (empty -> false in CMake).

Co-Authored-By: Claude Code <noreply@anthropic.com>

qt6-after/qt6-migrated-legatus/new_docker_build_release2.sh

@@ -384,6 +384,7 @@ DOCKER_RUN_ARGS=(
   -e RUN_CTEST="${RUN_CTEST}"
   -e TESTS_ONLY="${TESTS_ONLY}"
   -e RUN_JENKINS_BUILDER="${RUN_JENKINS_BUILDER}"
+  -e GUEZ_MODE="${GUEZ_MODE}"
   -e PACKAGE_OUTPUT_DIR="${PACKAGE_OUTPUT_DIR}"
   -e LTS_VERSION="${LTS_VERSION}"
   -e PROJECT="${PROJECT}"
@@ -603,15 +604,17 @@ if [[ "${RUN_JENKINS_BUILDER}" == "ON" ]]; then
   log_info "  BUILD_NUMBER=${BUILD_NUMBER}"
   log_info "  BUILD_TAG=${BUILD_TAG}"
 
+  # DEB cmake flags: -DBUILD_RTI=ON is required - the full-tree DEB build
+  # compiles RTI codegen consumers (e.g. svcPdmCommon -> pdm_enums.hpp)
+  # whose BUILD_RTI=OFF stubs were removed as "forbidden OFF variants".
+  # (A '#' line inside a backslash-continued command breaks the continuation
+  # and drops the remaining arguments - keep comments outside it.)
   cd "${STAGED_SOURCE_DIR}/rpmbuild"
   if python3 make_rpm_ubuntu26_release2.py -c LTS \
       --project_name "${PROJECT}" \
       --version "${LTS_VERSION}" \
       --output_dir "${DOCKER_MOUNT_ROOT}/rpms/${PROJECT}/${OS_VERSION}/" \
       --source_dir "${STAGED_SOURCE_DIR}" \
-      # -DBUILD_RTI=ON is required: the full-tree DEB build compiles RTI
-      # codegen consumers (e.g. svcPdmCommon -> pdm_enums.hpp) whose
-      # BUILD_RTI=OFF stubs were removed as "forbidden OFF variants".
       --cmake_build_flags "-DUSE_IPO=ON -DUSE_UNITY_BUILD=ON -DGUEZ_MODE=${GUEZ_MODE} -DBUILD_WLS=ON -DPostgreSQL_TYPE_INCLUDE_DIR=/usr/include/postgresql/ -DBUILD_RTI=ON -DRELEASE_BUILD=ON" \
       --build_number "${BUILD_NUMBER}" \
       --release_scope; then