running FSSpecFileLister in ikernel doesn't work

🐛 Describe the bug

Hi
This bug is following the conversation on discuss.pytorch.org
When running the following code in a jupyter kernel - the fs.protocol is not consistent

To reproduce - there is a need to update the url_to_fs call in /torchdata/datapipes/iter/load/fsspec.py file

   fs, path = fsspec.core.url_to_fs(self.root, token='/Path/to/creds/credentials.json')

then run the following code

from torchdata.datapipes.iter import FSSpecFileLister
image_bucket = "gs://path/to/folder"
datapipe = FSSpecFileLister(root=image_bucket, masks=['*.png'])
file_dp = datapipe.open_file_by_fsspec(mode='rb')
list(file_dp)

in the second time running this code without restarting the kernel the URI returns without the gs:// but with the full path of the environment.

Versions

Collecting environment information...
PyTorch version: 1.11.0
Is debug build: False
CUDA used to build PyTorch: None
ROCM used to build PyTorch: N/A

OS: macOS 12.3.1 (x86_64)
GCC version: Could not collect
Clang version: 13.1.6 (clang-1316.0.21.2.3)
CMake version: Could not collect
Libc version: N/A

Python version: 3.9.13 (main, May 24 2022, 21:28:31) [Clang 13.1.6 (clang-1316.0.21.2)] (64-bit runtime)
Python platform: macOS-12.3.1-x86_64-i386-64bit
Is CUDA available: False
CUDA runtime version: No CUDA
GPU models and configuration: No CUDA
Nvidia driver version: No CUDA
cuDNN version: No CUDA
HIP runtime version: N/A
MIOpen runtime version: N/A
Is XNNPACK available: True

Versions of relevant libraries:
[pip3] facenet-pytorch==2.5.2
[pip3] mypy-extensions==0.4.3
[pip3] numpy==1.22.4
[pip3] pytorch-ignite==0.4.9
[pip3] torch==1.11.0
[pip3] torchdata==0.3.0
[pip3] torchvision==0.12.0

Start in /torchdata/datapipes/iter/load/fsspec.py, focusing on the url_to_fs call used by FSSpecFileLister. Reproduce the example in a Jupyter kernel twice with the gs:// path and credentials token, then compare the returned URI and filesystem protocol. Done means repeated execution remains consistent without restarting the kernel.