The core rollMode setting defaults to an invalid choice

[mattexdee]

Originally in GitLab by @mattexdee

Originally posted by Ghost here: https://discord.com/channels/170995199584108546/872553750877835264/925486098346553394

• ALL MODULES DISABLED? true
• OS, Hosting, Browser (if applicable): Not applicable
• Short Description of bug: The core setting rollMode defaults to "roll" which is not one of the choices. This is not a big problem because it's handled by ChatMessage#applyRollMode but modules / systems might depend on this being consistent.
• Simple steps to reproduce the bug: Start foundry in a new client (or incognito tab), open some world, execute game.settings.get("core", "rollMode") in the console and see that it's roll instead of the expected publicroll.

Note: I have reproduced this issue.