Enhance Route Finding To Consider Canals

[redrum]

With the release of RSOC v3, the lack of canal validation during route finding is very apparent. This has been true for all maps but most have only a handful of canals where RSOC has hundreds. Route finding should do some basic canal checks to ensure the canal is controlled and at least 1 of the selected units can move through.

Before (Fighter Tries to Pass Through Rail Connection Land Canals)

After (Fighter Properly Calculates a Route Ignoring the Land Canal Connections)

PR: https://github.com/triplea-game/triplea/pull/4026

ron-murhammer created this issue in triplea-game/triplea

closed Add canal validation to route finding #4026