Document pathlib with_segments duck typing for path object arguments

Some pathlib methods use the presence of a with_segments attribute to decide whether an argument is already a path object.

This behavior was changed in gh-128520 / GH-130199 for Python 3.14. The main pathlib reference documents PurePath.with_segments(), but it does not currently mention that methods such as PurePath.match() and Path.rename() use with_segments as this duck-typed marker.

This can surprise authors of path-like or path-adjacent classes that define with_segments without implementing os.PathLike. The docs should describe the current behavior so subclass and third-party path authors have a clear contract to work from.

Linked PRs

• gh-153394

Comience en la referencia principal de pathlib, en la documentación de PurePath.with_segments(), y revise las referencias a PurePath.match() y Path.rename(). Documente que la presencia de with_segments se utiliza como marcador de un objeto de ruta basado en duck typing, incluida la implicación para las clases similares a rutas y adyacentes a rutas; confirme que la documentación renderizada explica el comportamiento actual de Python 3.14.