lisp/org.el (org-return): Enable `delete-selection'

* lisp/org.el (org-return): Enable `delete-selection'.

Reported-by: Gustavo Barros <gusbrs.2016@gmail.com>
<https://list.orgmode.org/87zgvz6lz7.fsf@gmail.com/>

lisp/org.el

@@ -16763,6 +16763,7 @@ because, in this case the deletion might narrow the column."
 (put 'org-delete-char 'delete-selection 'supersede)
 (put 'org-delete-backward-char 'delete-selection 'supersede)
 (put 'org-yank 'delete-selection 'yank)
+(put 'org-return 'delete-selection t)
 
 ;; Make `flyspell-mode' delay after some commands
 (put 'org-self-insert-command 'flyspell-delayed t)