Advance redbear-full Wayland, greeter, and Qt integration

Consolidate the active desktop path around redbear-full while landing the greeter/session stack and the runtime fixes needed to keep Wayland and KWin bring-up moving forward.

local/recipes/kde/kf6-kcrash/source/src/kcrash.cpp

@@ -24,8 +24,10 @@
 #include <qplatformdefs.h>
 #ifndef Q_OS_WIN
 #include <cerrno>
+#include <grp.h>
 #include <sys/resource.h>
 #include <sys/wait.h>
+#include <sys/wait.h>
 #include <sys/un.h>
 #else
 #include <qt_windows.h>