Inconsistent uv python find error message

[potoo0]

If virtualenv is activated, uv python find <not exists version> msg should be consistent regardless of the working path.

(cd ~; uv python find 3.13) error msg should the same as uv python find 3.13.

# code @ archlinux in ~/.venv/jupyter jupyter [16:44:32]
$ uv python find 3.12
/home/code/.venv/jupyter/bin/python3

# code @ archlinux in ~/.venv/jupyter jupyter [16:44:57]
$ (cd ~; uv python find 3.12)
/home/code/.venv/jupyter/bin/python3

# code @ archlinux in ~/.venv/jupyter jupyter [16:45:04]
$ uv python find 3.13
error: No interpreter found for Python 3.13 in virtual environments, managed installations, or system path

# code @ archlinux in ~/.venv/jupyter jupyter [16:45:11] C:2
$ (cd ~; uv python find 3.13)
error: Broken virtualenv `/home/code/.venv`: `pyvenv.cfg` is missing

[charliermarsh]

\cc @zanieb

[potoo0]

python_find test error:

Testing started at 18:16 ...
/home/wsl/0-projects/uv/target/debug/deps/python_find-820b62fc917fea0d python_find --format=json --exact -Z unstable-options --show-output
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Snapshot Summary ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Snapshot: python_find
Source: crates/uv/tests/python_find.rs:28
────────────────────────────────────────────────────────────────────────────────
Expression: snapshot
────────────────────────────────────────────────────────────────────────────────
-old snapshot
+new results
────────────┬───────────────────────────────────────────────────────────────────
    1     1 │ exit_code: 2
    2     2 │ ----- stdout -----
    3     3 │ 
    4     4 │ ----- stderr -----
    5       │-error: No interpreter found in virtual environments, managed installations, or system path
          5 │+error: Broken virtualenv `/home/wsl/.venv`: `pyvenv.cfg` is missing
────────────┴───────────────────────────────────────────────────────────────────
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