[21Moon] Terminal should be placeable after private companies close.

[lsanwick]

What's your Game ID?

https://18xx.games/game/148239

How to Reproduce the Bug?

• Terminal private company was never sold to a corporation.
• Terminal company closed after OR4.1
• Terminal tile should be placeable by any corporation after that point.

Which Browser / Platform?

[roseundy]

Yet another rule that was added after play testing.