make lyric-syllable-magnetic-snap work with recent versions

Author: akobel

notation-snippets/lyric-syllable-magnetic-snap/definitions.ily

@@ -52,7 +52,7 @@
    (let* ((meta-entry   (assoc-get 'meta grob-entry))
           (class        (assoc-get 'class meta-entry))
           (ifaces-entry (assoc-get 'interfaces meta-entry)))
-     (set-object-property! grob-name 'translation-type? list?)
+     (set-object-property! grob-name 'translation-type? ly:grob-properties?)
      (set-object-property! grob-name 'is-grob? #t)
      (set! ifaces-entry (append (case class
                                   ((Item) '(item-interface))