Fix window raising on Wayland

winId() doesn't work there, use windowHandle() instead

src/kmmainwidget.cpp

@@ -1295,7 +1295,7 @@ bool KMMainWidget::showSearchDialog()
     }
 
     mSearchWin->show();
-    KWindowSystem::activateWindow(mSearchWin->winId());
+    KWindowSystem::activateWindow(mSearchWin->windowHandle());
     return true;
 }
 

src/kmsystemtray.cpp

@@ -172,7 +172,7 @@ void KMSystemTray::slotActivated()
         KWindowSystem::setOnAllDesktops(mainWin->winId(), true);
     }
 
-    KWindowSystem::activateWindow(mainWin->winId());
+    KWindowSystem::activateWindow(mainWin->windowHandle());
 
     if (wasMinimized) {
         kmkernel->raise();