surface: Use correct display when destroying a surface for depth switch

surface: Use correct display when destroying a surface for depth switch

When surface depth switches from non-high-depth to high-depth (or vice
versa) the current surface has to be destroyed before a new one can be
created for this window. eglDestroySurface however was getting passed a
GdkDisplay, rather than the EGLDisplay it expects. As a result the old
surface did not get destroyed and the new surface could not be created
causing rendering to freeze.

Fixes: https://gitlab.gnome.org/GNOME/gtk/-/issues/4773