connected failed event for some tasks

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

launcher/modplatform/flame/FlamePackExportTask.cpp

@@ -327,6 +327,7 @@ void FlamePackExportTask::getProjectsInfo()
         }
         buildZip();
     });
+    connect(projTask.get(), &Task::failed, this, &FlamePackExportTask::emitFailed);
     task.reset(projTask);
     task->start();
 }