Emacs 31 release-blocking bugs

These are the open bugs, at the time of writing, that I think we need to
either fix or decide not to fix before we can prepare a release
candidate.

- #80903 31.0.50; vc-next-action fails irregularly for git
- #80996 31; Libraries that still need to be assigned to packages
- #81018 macOS 15 crash build as of
   876a1db6ee00f1d1b2af0329236acc8bdcceda5b
- #81038 31.0.50; In org-mode, unfill-paragraph doesn't work at the very
   end of a paragraph
- #81077 31.0.60; Sometimes only upper parts of text are unexpectedly
   displayed
- #81091 package-selected-packages not updated after init
- #81105 32.0.50; installed ELPA package info missing on some distros
   after commit 7c22a7d
- #81112 31.0.60; Package.el error when rejecting during review
- #81151 32.0.50; Make c-ts-mode-indent-style work with setopt-local
- #81193 31.0.90; Wrong offsets in 'set-frame-size-and-position'
- #81211 31.0.90; Android build fails with current Java compilers
- #81213 31.0.90; Package list is colorized after upgrading packages
- #81254 work-buffer--release incorrectly resets current-buffer on first
   release, clearing mark-active
- #81373 31.0.90; package-upgrade and package-retention-policy
- #81394 31.0.90; unexpected buffer completion behavior
- #81407 31.0.90; Crash in display_line: stale glyph_row after
   window-config change from menu-bar :enable eval during redisplay
- #81408 31.0.90; gnus-icalendar-event--find-attendee no longer matches
   regexp quoted strings
- #81424 32.0.50; Build time dependency on TeX
- #81443 31.0.90; excessive backup files created when deleting from
   vc-dir
- #81460 31.0.90; tsx-ts-mode matches html tag's opening < with > in
   arrow function =>
- #81489 32.0.50; w32--terminal-is-conhost is nil in gui emacs.
- #81490 32.0.50; wrong-type-argument internal to package-install
- #81503 32.0.50; crash/assert in garbage_collect
- #81509 31.0.91; Calling dired on nonexistent directory changes current
   buffer
- #81510 31.0.90; NS (macOS): clicking a disabled (:enable nil) tab-bar
   item crases Emacs
- The problem with icalendar tests failing in certain timezones:
  <https://https://lists.gnu.org/archive/html/emacs-devel/2026-07/msg00445.html>

I used
<https://debbugs.gnu.org/cgi/pkgreport.cgi?bug-rev=on;ordering=oldview;package=emacs>
to prepare this.

I ignored anything that is reproducible in Emacs 30 and not serious.
I focused on things that are about new features added or significantly
modified in Emacs 31, and started from the date of the feature freeze,
both at Eli's suggestion.

-- 
Sean Whitton