Misc. bug: option --remote of convert_hf_to_gguf.py does not work in Windows

[pqnet]

Name and Version

git rev 2bb0467

Operating systems

Windows

Which llama.cpp modules do you know to be affected?

Python/Bash scripts

Command line

> python convert_hf_to_gguf.py --remote Qwen/Qwen2.5-0.5B

Problem description & steps to reproduce

Due to Path -> str conversion transforming / into \ in Windows, the HF model id is not recognized as valid.

First Bad Commit

No response

Relevant log output

[pqnet]

related: #14100