bug#81641: 32.0.50; completion-auto-help 'visible and 'always doesn't indicate it's been completed in minibuffer completion

When using completion-auto-help 'visible or 'always, and the
completions window gets open because there are a lot of candidates,
after the completion has been realized the one candidate still gets
displayed not closing the *Completions* window and not showing the
message [Sole completion].

After the only candidate has been completed if you move the cursor one
back and try to complete again, the message [Sole completion] appears and the
completions window closes.

In buffer completion this doesn't happens (I don't know if it is the
same system)

The message `[Sole completion]` is useful and also the closing of the window as an indication.

Tested with:

emacs -Q --eval "(setq completion-auto-help 'always)"

And:

emacs -Q --eval "(setq completion-auto-help 'visible)"

By doing ~/.emacs.d/e TAB -> and it displays elpa/ early-init.el as candidates and then typing character `a` it completes to early-init.el and the message [Sole completion] can't be seen and the window lingers.

Thanks


In GNU Emacs 32.0.50 (build 1, x86_64-apple-darwin21.6.0, NS
appkit-2113.65 Version 12.7.6 (Build 21H1320)) of 2026-08-10 built on
mcbata
Windowing system distributor 'Apple', version 10.3.2113
System Description:  macOS 12.7.6

Configured using:
'configure --prefix=/opt/local --disable-silent-rules --without-dbus
--without-gconf --without-libotf --without-m17n-flt --with-libgmp
--with-gnutls --with-xml2 --with-modules --with-sqlite3 --with-webp
--with-native-compilation=aot --infodir /opt/local/share/info/emacs
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'LDFLAGS=-L/opt/local/lib -Wl,-headerpad_max_install_names -Wl,-no_pie
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-arch x86_64''

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Important settings:
  value of $LC_ALL: en_US.UTF-8
  value of $LC_CTYPE: UTF-8
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Major mode: Lisp Interaction

Minor modes in effect:
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  blink-cursor-mode: t
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Load-path shadows:
None found.

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Memory information:
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(string-bytes 1 544596) (vectors 16 9826)
(vector-slots 8 143392 6208) (floats 8 22 2) (intervals 56 286 5)
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