Remove Stardust Labs Intro Message

This is a simple datapack/mod that removes Stardust Labs's projects' introduction message when creating a world. The intro message can appear on the latest versions of Terralith, Incendium, and Nullscape.

Modpack devs are free to use this if they so desire; just stick it in your modpack, and it should effectively prevent Stardust Labs projects from making any chat messages on first world load. This is especially useful for modpack devs that don't want a ton of chat spam on first load, or don't want users confusingly joining the wrong Discord server.