bug#45915: 28.2; delete-char deletes two letters

[Tak Kunihiro]

I see a light.
With the following patch, <delete> deletes only a letter.

The (org-table-align) inserts string with text properties.
It seems that the text properties matter.

However, I do not understand what's going on there. Can you take a look
(org-table-align) with this hint and revise it in correct way?

diff --git a/lisp/org/org-table.el b/lisp/org/org-table.el
index 9b692d09736..55bc2838718 100644
--- a/lisp/org/org-table.el
+++ b/lisp/org/org-table.el
@@ -4410,6 +4410,7 @@ org-table-align
                                                     alignments)
                                          "|")))
                           "|")))
+              (setq new (substring-no-properties new))
              (if (equal new previous)
                  (forward-line)
                (insert new "\n")