package/gstreamer1/gst1-plugins-base: fix build with meson 0.58.x

Fixes:
In file included from ../gst-libs/gst/gl/gstglwindow.c:54:
../gst-libs/gst/gl/wayland/gstglwindow_wayland_egl.h:25:10: fatal error: xdg-shell-client-protocol.h: No such file or directory
   25 | #include "xdg-shell-client-protocol.h"
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>