bpo-39667: Sync zipp 3.0 (GH-18540)

* bpo-39667: Improve pathlib.Path compatibility on zipfile.Path and correct performance degradation as found in zipp 3.0

* 📜🤖 Added by blurb_it.

* Update docs for new zipfile.Path.open

* Rely on dict, faster than OrderedDict.

* Syntax edits on docs

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>