wpe-simple-launcher: Define WEBKIT_GST_DISABLE_GL_SINK=1

This change disables the GL sink in the WebKit GStreamer
pipeline fixing the performance for RPI5.

Change-Type: minor

Author: psaavedra

recipes-browser/wpe-simple-launcher/wpe-simple-launcher/wpe-exported-wayland

@@ -21,6 +21,8 @@ CTL_FILE="/tmp/wpe-exported-wayland"
 export WEBKIT_GST_DMABUF_SINK_ENABLED=1
 export WEBKIT_GST_DMABUF_SINK_DISABLED=false
 
+export WEBKIT_GST_DISABLE_GL_SINK=1
+
 # Ensure Wayland and XDG runtime environment variables are propagated
 WAYLAND_DISPLAY=$(strings < "/proc/$(pidof weston-keyboard)/environ" | grep WAYLAND_DISPLAY)
 XDG_RUNTIME_DIR=$(strings < "/proc/$(pidof weston-keyboard)/environ" | grep XDG_RUNTIME_DIR)