The Flat World, Starting Map, and Bonus Chest toggles are in the incorrect placement in the edit world screen.

How to reproduce:

1. Edit any world (switch to the new design if on the old UI)
2. Go to the advanced tab
3. Scroll down to the very bottom
4. Observe the three toggles present on the very bottom

Observed results:

The Flat World, Starting Map, and Bonus Chest toggles are on the very bottom of the advanced tab below the simulation distance choice group.

Expected results:

The Flat World, Starting Map, and Bonus Chest toggles should be in the same place as the Create New World screen, that being between the Seed textbox and Show coordinates toggle.