Minor patches to handle irregular database state

[sei-jbritton]

API-only change to address 2 minor bugs that were identified recently regarding destroyed TopoMojo gamespaces and _initialscore_ challenges in the database with no State JSON.

Fixes:

1. Safely handle error from TopoMojo API during reset session. If a TopoMojo gamespace is deleted for any reason, there may be errors when Gameboard attempts to contact TopoMojo looking for that specific id. During "Reset Session", it is okay if the Gamespace is no longer there, but it must not fail and prevent the session from being reset. It now catches any errors and puts a default value instead.
2. Ignore initialscore challenges in list function since null State may cause errors. When a team advances to another game with score there is a hidden challenge record containing that previous score to be added to the new session score. This challenge record has no State JSON and cannot be parsed when trying to access fields from it. These are now filtered out.

[sei-mkaar]

Tested with Foundry Appliance 👍