8338751: ConfigureNotify behavior has changed in KWin 6.2

Backport-of: 3da68900818fc43b777098fe6e244779794d5294

src/java.desktop/unix/classes/sun/awt/X11/XWindowPeer.java

@@ -773,6 +773,7 @@ class XWindowPeer extends XPanelPeer implements WindowPeer,
             // TODO this should be the default for every case.
             switch (runningWM) {
                 case XWM.CDE_WM:
+                case XWM.KDE2_WM:
                 case XWM.MOTIF_WM:
                 case XWM.METACITY_WM:
                 case XWM.MUTTER_WM: