Fix plugin menu visual checked problem

It is not unchecking the "Show SSH Manager" when closing the
dockWidget with the Close icon.

It is not checking the the box when the dockWidget opens with the
konsole.

src/plugins/SSHManager/sshmanagerplugin.cpp

@@ -67,10 +67,11 @@ QList<QAction *> SSHManagerPlugin::menuBarActions(Konsole::MainWindow* mainWindo
 
     QAction *toggleVisibilityAction = new QAction(i18n("Show SSH Manager"), mainWindow);
     toggleVisibilityAction->setCheckable(true);
-    toggleVisibilityAction->setChecked(false);
 
     connect(toggleVisibilityAction, &QAction::triggered,
             d->dockForWindow[mainWindow], &QDockWidget::setVisible);
+    connect(d->dockForWindow[mainWindow], &QDockWidget::visibilityChanged,
+            toggleVisibilityAction, &QAction::setChecked);
 
     return {toggleVisibilityAction};
 }