Describe the bug

test jobs (nightly and PRs) are failing like this

File /opt/conda/lib/python3.12/site-packages/cupy/_environment.py:130, in _get_conda_cuda_path()
    128     else:
    129         arch = f'{plat}-linux'
--> 130     cuda_path = os.path.join(conda_prefix, 'targets', arch)
    131 elif _PLATFORM_WIN32:
    132     cuda_path = os.path.join(conda_prefix, 'Library')

File <frozen posixpath>:76, in join(a, *p)

TypeError: expected str, bytes or os.PathLike object, not NoneType

(build link)

Steps/Code to reproduce bug

Any recent (26.04) PR or nightly build.

Expected behavior

test jobs should succeed

Environment details (please complete the following information):

• Environment location: [Bare-metal, Docker, Cloud(specify cloud provider)]
• Method of cuDF install: [conda, Docker, or from source]
  • If method of install is [Docker], provide docker pull & docker run commands used
• Please run and attach the output of the cudf/print_env.sh script to gather relevant environment details

Additional context
Add any other context about the problem here.