Fix black buttons as observer on a GAIA market.
Reported by: langbart
Reviewed By: bb
Fixes #6219
Differential Revision: https://code.wildfiregames.com/D4164
open trade card from top menu switch to observer, go back to player, missing buttons
https://wildfiregames.com/forum/topic/56568-petra-having-problems-with-fishing-on-maps-with-water-available/?do=findComment&comment=454690
never enabled back