PR review request: New methods to access mailbox.Maildir message info and flags

[gildea (Stephen Gildea)]

I’m looking for a reviewer for a small patch to optimize
accessing message flags on a large Maildir.

Please see issue Add Maildir.get_flags() to access message flags without opening the file · Issue #90890 · python/cpython · GitHub

and/or the PR gh-90890: New methods to access mailbox.Maildir message info and flags by gildea · Pull Request #103905 · python/cpython · GitHub

[tjreedy (Terry Jan Reedy)]

Greg Smith reviewed, revised, retested, and enabled automerge.