[BUG] XYZGrid calling non-existent method

[Jake]

Describe the bug

XYZGrid calls all_rooms method (

evennia/evennia/contrib/grid/xyzgrid/launchcmd.py

Line 405 in 40a4bd0

 print("Valid mapnames/zcoords are\n:", "\n ".join(xymap.Z for xymap in grid.all_rooms())) 

) which does not exist.

[InspectorCaracal]

Looks like it's supposed to be all_maps