Merge from origin/emacs-28

a6905e90cc Fix problem with temp buffer killing in package-install-file
144ad77fda Fix Lisp Intro markup error
24b86cb4f7 Fix ACL errors with WebDAV volumes on MS-Windows

diff --cc doc/lispintro/emacs-lisp-intro.texi
Simple merge

diff --cc lisp/emacs-lisp/package.el
Simple merge

diff --cc src/w32.c
Simple merge