fix(build): install pinned cuDNN Frontend Git ref in fw-final (#6447)

Signed-off-by: Ajay Balasa <abalasa@nvidia.com>

Author: balasaajay

docker/Dockerfile.fw_final

@@ -72,11 +72,15 @@ RUN \
     BASE_RUNTIME_UV_ARGS="" && \
     if [ "${MBRIDGE_PRESERVE_BASE_RUNTIME:-False}" = "True" ]; then \
         BASE_RUNTIME_UV_ARGS="--no-install-package nvidia-cudnn-frontend --no-install-package transformer-engine --no-install-package transformer-engine-torch"; \
+    elif [ -n "$CUDNN_FRONTEND_GIT_REF" ]; then \
+        BASE_RUNTIME_UV_ARGS="--no-install-package nvidia-cudnn-frontend"; \
     fi && \
     uv sync --no-cache-dir --all-groups --inexact ${BASE_RUNTIME_UV_ARGS} && \
     if [ -n "$CUDNN_FRONTEND_GIT_REF" ] && [ "${MBRIDGE_PRESERVE_BASE_RUNTIME:-False}" != "True" ]; then \
-        uv pip install --no-cache-dir --no-deps --reinstall \
-            "nvidia-cudnn-frontend @ git+https://github.com/NVIDIA/cudnn-frontend.git@${CUDNN_FRONTEND_GIT_REF}"; \
+        uv pip install --no-config --no-cache-dir --no-deps --reinstall \
+            "nvidia-cudnn-frontend @ git+https://github.com/NVIDIA/cudnn-frontend.git@${CUDNN_FRONTEND_GIT_REF}" && \
+        CUDNN_FRONTEND_GIT_REF="$CUDNN_FRONTEND_GIT_REF" python -c \
+            'import importlib.metadata as m, json, os, sys; source = m.distribution("nvidia-cudnn-frontend").read_text("direct_url.json"); sys.exit(0 if json.loads(source)["vcs_info"]["commit_id"] == os.environ["CUDNN_FRONTEND_GIT_REF"] else "cuDNN Frontend Git ref mismatch")'; \
     fi && \
     python /opt/preserve_base_runtime.py check /opt/base-runtime-packages.json && \
     uv pip list && \