If Fathomless Mud's inland rule and Habsburg's Build modifier both apply, which comes first?

Question

Accepted Answer

You may choose the order, so you can end up Building one or two Explorers. This was a provisional developer ruling not yet in the FAQ, and one player argued the FAQ priority favors Mud's rule.

Horizons of Spirit Island

If Fathomless Mud's inland rule and Habsburg's Build modifier both apply, which comes first?