fix #2425

(kill-whole-line) kills folded text if called from column 1
Make sure to unfold text before calling it --
Prevents data loss if user has decided to extract subtree on a folded org headline.

org-roam-node.el

@@ -880,6 +880,7 @@ node."
   (org-with-point-at 1
     (let ((title (nth 4 (org-heading-components)))
           (tags (org-get-tags)))
+      (org-fold-show-all)
       (kill-whole-line)
       (org-roam-end-of-meta-data t)
       (insert "#+title: " title "\n")