winex11: Do not give focus to a WS_EX_NOACTIVATE window.

dlls/winex11.drv/event.c

@@ -463,6 +463,7 @@ static inline BOOL can_activate_window( HWND hwnd )
     if (!(style & WS_VISIBLE)) return FALSE;
     if ((style & (WS_POPUP|WS_CHILD)) == WS_CHILD) return FALSE;
     if (style & WS_MINIMIZE) return FALSE;
+    if (GetWindowLongW( hwnd, GWL_EXSTYLE ) & WS_EX_NOACTIVATE) return FALSE;
     if (hwnd == GetDesktopWindow()) return FALSE;
     return !(style & WS_DISABLED);
 }