Skip interpreters that are not found on query (#15315)
Closes https://github.com/astral-sh/uv/issues/12155
We already throw this error earlier if we cannot find the interpreter
https://github.com/astral-sh/uv/blob/c318e8860e69077fdfe8fff7356985e684591b40/crates/uv-python/src/interpreter.rs#L1039
Why the pyenv-win shim _exists_ but fails to run with a not found error
is beyond me. I think I'll take the incremental improvement here by just
ignoring it. We can try to support their shims later?
#15317 confirms the fix.
