Forge in Campaign Locales?

Halo Infinite is to be a limited open-world experience.
So that begs the question… will Forge allow players to enter the locales we explore in the story mode and let us build our own forge maps out of the open landscape it provides?
It would be smart from a development standpoint, considering the fact that this would mean the team wouldn’t have to work on making separate maps that are JUST for forge, thus making it save time and game-data size.