Skip installed Python check for URL dependencies (#18211)
## Summary
Skip the installed Python version check when resolving URL dependencies.
Such checks are already skipped for registry dependencies.
Closes https://github.com/astral-sh/uv/issues/18199.
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Signed-off-by: Chiranjeevi U <244287281+chiranjeevi-max@users.noreply.github.com>
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
