fix(memory leak): don't give shared pointers out to foldermodels (causes cyclic refrence)

Signed-off-by: Rachel Powers <508861+Ryex@users.noreply.github.com>

launcher/minecraft/WorldList.cpp

@@ -45,7 +45,7 @@
 #include <QFileSystemWatcher>
 #include <QDebug>
 
-WorldList::WorldList(const QString &dir, std::shared_ptr<const BaseInstance> instance)
+WorldList::WorldList(const QString &dir, BaseInstance* instance)
     : QAbstractListModel(), m_instance(instance), m_dir(dir)
 {
     FS::ensureFolderPathExists(m_dir.absolutePath());