Include fixes for Qt6

addons/filetree/katefiletree.cpp

@@ -26,6 +26,7 @@
 #include <KMessageBox>
 #include <KStandardAction>
 
+#include <QActionGroup>
 #include <QApplication>
 #include <QClipboard>
 #include <QContextMenuEvent>

kate/katemainwindow.cpp

@@ -55,7 +55,6 @@
 #include <KXMLGUIFactory>
 
 #include <QApplication>
-#include <QDesktopWidget>
 #include <QDir>
 #include <QFontDatabase>
 #include <QList>

kate/katemainwindow.h

@@ -16,6 +16,7 @@
 #include <ktexteditor/mainwindow.h>
 #include <ktexteditor/view.h>
 
+#include <KIO/UDSEntry>
 #include <KParts/Part>
 
 #include <QDragEnterEvent>

kate/quickopen/katequickopen.cpp

@@ -25,7 +25,6 @@
 
 #include <QBoxLayout>
 #include <QCoreApplication>
-#include <QDesktopWidget>
 #include <QEvent>
 #include <QFileInfo>
 #include <QHeaderView>

kate/quickopen/katequickopenlineedit.cpp

@@ -6,6 +6,7 @@
 */
 #include "katequickopenlineedit.h"
 
+#include <QActionGroup>
 #include <QContextMenuEvent>
 #include <QMenu>
 

kate/session/katesessionsaction.cpp

@@ -10,6 +10,7 @@
 #include "kateapp.h"
 #include "katesessionmanager.h"
 
+#include <QActionGroup>
 #include <QMenu>
 #include <algorithm>