[1894] Fix bug stopping company floated in last SR from running trains

[Galatolol]

• Branch is derived from the latest master
• Add the pins label if this change will break existing games
• Code passes linter with docker compose exec rack rubocop -a
• Tests pass cleanly with docker compose exec rack rake

Implementation Notes

• Explanation of Change

In the last OR set, track and token steps are skipped. If a company floats just before that, it does place its home station but the graph is not recalculated, so for the engine it doesn't have any route.

Technically this requires pinning but it's unlikely to occur... If pinning is problematic, then we can risk not doing it.