Fix electric-buffer-list buffer selection

* lisp/ebuff-menu.el (electric-buffer-list): Ensure that point is
restored, which isn't always the case if
global-display-line-numbers-mode (bug#43755).  This enables
selecting buffers again.

lisp/ebuff-menu.el

@@ -162,6 +162,7 @@ Run hooks in `electric-buffer-menu-mode-hook' on entry.
 	(message "")))
     (when select
       (set-buffer buffer)
+      (goto-char select)
       (let ((opoint (point-marker)))
 	(Buffer-menu-execute)
 	(goto-char (point-min))