False positive "Stop_position is not part of a way" for monorail stops

[claudiush]

What steps will reproduce the problem?

• Load the monorail route relation ​4568069 (This contains stop positions tagged as public_transport=stop_position + monorail=yes on track tagged as railway=monorail)
• Run JOSM Validator on that data

What is the expected result?

No public transport warnings to be flagged for this data

What happens instead?

"PT: Stop_position is not part of a way" error flagged for a bunch of these stop positions

This actually seems to be caused by the PT Assistant validation and the fact that "monorail" (as in ways tagged as railway=monorail) is not an accepted value for the isWaySuitableForPublicTransport() function:

pt_assistant/src/main/java/org/openstreetmap/josm/plugins/pt_assistant/utils/RouteUtils.java

Line 252 in 1ff2e15

String[] acceptedRailwayTags = new String[] {"tram", "subway", "light_rail", "rail" };

See also original report at JOSM bugtracker: https://josm.openstreetmap.de/ticket/18034