switching to 3d mode doesnt show background, only white

[landryb]

Describe the bug

from #248 - reproduces on https://ids.craig.fr/mapstore/ (2022.01, custom terrain) and another internal instance running master (be it with a custom terrain or the default ellipsoid), loading the default 2d map (with a background) and switching to 3d via the button only shows first a black map then a white map.

wms requests are done agains the background layer and receive proper tiles/data, but nothing is shown from them.

user needs to switch background to "see" tiles overlayed on the globe. switching back to the default background also properly displays tiles on the globe.

doesnt reproduce on https://demo.georchestra.org/mapstore/ (master, default terrain) so ... strange ?

[landryb]

will be fixed once geosolutions-it/MapStore2#9614 is backported to 2023.02 and the submodule here is updated