Fix fret diagram VS harmony interactions

Author: mike-spa

src/engraving/dom/fret.cpp

@@ -1127,6 +1127,12 @@ bool FretDiagram::setProperty(Pid propertyId, const PropertyValue& v)
     case Pid::FRET_FINGERING:
         setFingering(v.value<std::vector<int> >());
         break;
+    case Pid::VISIBLE:
+        setVisible(v.toBool());
+        if (m_harmony) {
+            m_harmony->setVisible(v.toBool());
+        }
+        break;
     case Pid::EXCLUDE_VERTICAL_ALIGN: {
         bool val = v.toBool();
         setExcludeVerticalAlign(val);

src/engraving/editing/edit.cpp

@@ -4024,13 +4024,6 @@ void Score::cmdDeleteSelection()
                         fretDiagram->undoChangeProperty(Pid::VISIBLE, false);
                         continue;
                     }
-                } else if (e->isFretDiagram()) {
-                    FretDiagram* fretDiagram = toFretDiagram(e);
-                    Harmony* harmony = fretDiagram->harmony();
-                    if (harmony) {
-                        undoChangeParent(harmony, fretDiagram->segment(), track2staff(fretDiagram->track()));
-                        elSelectedAfterDeletion = harmony;
-                    }
                 } else if (e->isHarmony()) {
                     Harmony* harmony = toHarmony(e);
                     if (harmony->parentItem()->isFretDiagram()) {