chore: fix the github variables

.github/workflows/pr-test.yaml

@@ -31,9 +31,8 @@ jobs:
       (github.event_name == 'pull_request' && !github.event.pull_request.draft) ||
       (github.event_name == 'workflow_dispatch')
     env:
-      COMFYUI_MODELS_ROOT: ${{ vars.COMFYUI_MODELS_ROOT }}
-      NUNCHAKU_TEST_CACHE_ROOT: ${{ vars.NUNCHAKU_TEST_CACHE_ROOT }}
-      HF_TOKEN: ${{ vars.HF_TOKEN }}
+      COMFYUI_MODELS_ROOT: "~/workspace/comfyui_models"
+      NUNCHAKU_TEST_CACHE_ROOT: "~/workspace/nunchaku_test_root"
     steps:
       - name: Determine ref
         id: set-ref
@@ -86,6 +85,7 @@ jobs:
           pwd
           cd ..
           pip install comfy-cli
+          rm -rf ComfyUI
           yes | comfy --here install --nvidia --skip-torch-or-directml --version 0.3.44
           cd ComfyUI
           rm -r models
@@ -99,8 +99,8 @@ jobs:
           comfy node install comfyui-inpainteasy
           cp -r custom_nodes/ComfyUI-nunchaku/tests nunchaku_tests
           pip install -r nunchaku_tests/requirements.txt
-          python custom_nodes/ComfyUI-nunchaku/scripts/download_models.py
-          python custom_nodes/ComfyUI-nunchaku/scripts/download_test_data.py
+          HF_TOKEN=${{ secrets.HF_TOKEN }} python custom_nodes/ComfyUI-nunchaku/scripts/download_models.py
+          HF_TOKEN=${{ secrets.HF_TOKEN }} python custom_nodes/ComfyUI-nunchaku/scripts/download_test_data.py
       - name: Run ComfyUI tests
         run: |
           source $(conda info --base)/etc/profile.d/conda.sh
@@ -114,10 +114,11 @@ jobs:
           source $(conda info --base)/etc/profile.d/conda.sh
           conda activate test_env || { echo "Failed to activate conda env"; exit 1; }
           which python
-          pytest -v tests/flux/test_flux_examples.py
-          python .github/workflows/run_all_tests.py
+          echo $NUNCHAKU_TEST_CACHE_ROOT
+          HF_TOKEN=${{ secrets.HF_TOKEN }} pytest -v tests/flux/test_flux_examples.py
+          HF_TOKEN=${{ secrets.HF_TOKEN }} python .github/workflows/run_all_tests.py
       - name: clean up
         if: always()
         run: |
           cd ..
-          rm -rf ComfyUI ComfyUI-nunchaku
+          rm -rf ComfyUI