Cannot use hardlinking on windows with default setup

[eifinger]

As seen in https://github.com/Azure-Samples/azure-search-openai-demo/actions/runs/12658430643/job/35275362707#step:7:18

Using Python 3.13.1 environment at C:\hostedtoolcache\windows\Python\3.13.1\x64
Resolved 175 packages in 1.85s
Prepared 174 packages in 20m 20s
warning: Failed to hardlink files; falling back to full copy. This may lead to degraded performance.
         If the cache and target directories are on different filesystems, hardlinking may not be supported.
         If this is intentional, set `export UV_LINK_MODE=copy` or use `--link-mode=copy` to suppress this warning.