add typing_extensions as test dependencies which is required by modelopt (#3743)

Author: lanluo-nvidia

py/requirements.txt

@@ -1,7 +1,7 @@
 numpy
 packaging
 pybind11==2.6.2
---extra-index-url https://download.pytorch.org/whl/nightly/cu129
+--extra-index-url https://download.pytorch.org/whl/test/cu129
 torch>=2.8.0,<2.9.0
 --extra-index-url https://pypi.ngc.nvidia.com
 pyyaml

tests/py/requirements.txt

@@ -8,6 +8,7 @@ pytest>=8.2.1
 pytest-xdist>=3.6.1
 pyyaml
 transformers==4.49.0
+typing-extensions
 nvidia-modelopt[all]; python_version >'3.9' and python_version <'3.13'
 --extra-index-url https://pypi.nvidia.com
 # flashinfer-python is not supported for python version 3.13 or higher