Check if hiding notes by default is enabled, hide text if it is

- Check if hide notes setting is enabled and update EntryModel notes'
  data if so
- Fixes keepassxreboot#4412

src/gui/entry/EntryModel.cpp

@@ -185,8 +185,12 @@ QVariant EntryModel::data(const QModelIndex& index, int role) const
             }
             return result;
         case Notes:
-            // Display only first line of notes in simplified format
-            result = entry->notes().section("\n", 0, 0).simplified();
+            // Display only first line of notes in simplified format if not hidden
+            if (config()->get("security/hidenotes").toBool()) {
+                result = EntryModel::HiddenContentDisplay;
+            } else {
+                result = entry->notes().section("\n", 0, 0).simplified();
+            }
             if (attr->isReference(EntryAttributes::NotesKey)) {
                 result.prepend(tr("Ref: ", "Reference abbreviation"));
             }