bug#72241: 31.0.50; [PATCH] Use a dedicated buffer for `doc-view-open-text'

bug#72241: 31.0.50; [PATCH] Use a dedicated buffer for `doc-view-open-text'

Here is an updated version of this patch.  WDYT?

From 6e32534012cafeda1d7e67aab23a8206bc887c9f Mon Sep 17 00:00:00 2001
From: Manuel Giraud <manuel@ledu-giraud.fr>
Date: Sun, 21 Jul 2024 18:52:52 +0200
Subject: [PATCH] Use a dedicated buffer for `doc-view-open-text'

* lisp/doc-view.el (doc-view-open-text): Create a new "text
contents" buffer and switch to it.
(doc-view-toggle-display): Switch back to the document buffer
and kill the "text contents" one.
* etc/NEWS: Mention the change.

(cherry picked from commit 210b98bc9937a86920716ebdf0b0e00a0c79c8fe)