qt6: move 'QAction' to 'QtGui'

Author: Chiitoo

src/modules/backends/web/qtwebengine/QtWebEngineWebWidget.cpp

@@ -47,6 +47,9 @@
 #include <QtCore/QMimeData>
 #include <QtCore/QTimer>
 #include <QtCore/QtMath>
+#if QT_VERSION >= 0x060000
+#include <QtGui/QAction>
+#endif
 #include <QtGui/QClipboard>
 #include <QtGui/QContextMenuEvent>
 #include <QtGui/QImageWriter>
@@ -58,7 +61,9 @@
 #include <QtWebEngineCore/QWebEngineProfile>
 #include <QtWebEngineCore/QWebEngineScript>
 #include <QtWebEngineCore/QWebEngineSettings>
+#if QT_VERSION < 0x060000
 #include <QtWidgets/QAction>
+#endif
 #include <QtWidgets/QVBoxLayout>
 
 namespace Otter