made folder size reflect the number of elements

Signed-off-by: Trial97 <alexandru.tripon97@gmail.com>

launcher/minecraft/mod/ResourceFolderModel.cpp

@@ -417,7 +417,7 @@ QVariant ResourceFolderModel::data(const QModelIndex& index, int role) const
                 case DateColumn:
                     return m_resources[row]->dateTimeChanged();
                 case SizeColumn:
-                    return StringUtils::humanReadableFileSize(m_resources[row]->size(), true);
+                    return m_resources[row]->sizeStr();
                 default:
                     return {};
             }