fix: move newly allocated resources to the main thread

This avoids them getting deleted when the worker thread exits, due to
thread affinity on the created thread.

Signed-off-by: flow <flowlnlnln@gmail.com>

launcher/minecraft/mod/tasks/ModFolderLoadTask.h

@@ -79,4 +79,7 @@ private:
     ResultPtr m_result;
 
     std::atomic<bool> m_aborted = false;
+
+    /** This is the thread in which we should put new mod objects */
+    QThread* m_thread_to_spawn_into;
 };