check the install backend version to give more informative error messages

[mbway]

since version 0.4.25, uv pip show --files is supported and can be used to set the package installed by maturin develop as editable without having to fallback to using pip. However several users are using old versions of uv and it would be better if the error message was clearer if an outdated uv is used.

This has caused confusion in these issues:

• maturin failed, Caused by: failed to list package files #2388
• Cannot install import hook when monorepo maturin-import-hook#15

before:

✏️  Setting installed package as editable
💥 maturin failed
  Caused by: failed to list package files

after:

✏️  Setting installed package as editable
⚠️ Warning: failed to set package as editable: uv >= 0.4.25 is required for `show --files`. Version 0.4.23 was found.
🛠 Installed $PACKAGE

(note that installation now proceeds if setting as editable fails)