HACK: winex11: Don't rely on _NET_ACTIVE_WINDOW for tracking focus under gamescope.

gamescope does not set the NET_ACTIVE_WINDOW property in the root
window, meaning we can't rely on it to track focus or some games will
keep input focus regardless of what window is on top

gamescope pull request: ValveSoftware/gamescope#2063

CW-Bug-Id: #26217

Author: navi-desu

dlls/winex11.drv/event.c

@@ -700,7 +700,7 @@ static void set_focus( Display *display, HWND focus, Time time )
 
     TRACE( "setting foreground window to %p\n", focus );
 
-    if (!is_net_supported( x11drv_atom(_NET_ACTIVE_WINDOW) ))
+    if (X11DRV_HasWindowManager( "steamcompmgr" ) || !is_net_supported( x11drv_atom(_NET_ACTIVE_WINDOW) ))
     {
         NtUserSetForegroundWindow( focus );
 
@@ -969,7 +969,8 @@ static void focus_out( Display *display , HWND hwnd )
     /* don't reset the foreground window, if the window which is
        getting the focus is a Wine window */
 
-    if (!is_net_supported( x11drv_atom(_NET_ACTIVE_WINDOW) ) && !is_current_process_focused())
+    if ((X11DRV_HasWindowManager( "steamcompmgr" ) || !is_net_supported( x11drv_atom(_NET_ACTIVE_WINDOW) ))
+            && !is_current_process_focused())
     {
         /* Abey : 6-Oct-99. Check again if the focus out window is the
            Foreground window, because in most cases the messages sent