[Bug]: Trains on different track types can collide in end-to-end stations

[DFEvans]

Version of OpenTTD

13.0, Windows 10

Expected result

Trains of different types (railway, monorail, maglev) arrive in the end-to-end stations without colliding (as neither will pass onto the 'other' track type), or the signalling system will prevent them from using the track simultaneously.

Actual result

The trains are allowed to use the station simultaneously and collide.

Steps to reproduce

To recreate from scratch:

1. Place a Railway, Monorail, or Maglev station
2. Using a different track type, place another station on the end of the first, as if you were extending it
3. Timetable trains to use both halves of the station, and ensure they will be stopped in the platform simultaneously
4. When the second of the two trains arrives, it will collide with the one already in the platform

Attached save has this scenario set up, with a Monorail - Maglev station. After unpausing, the monorail train will arrive second, colliding with the maglev.

MonoMaglev.zip

Station layout in question - a 1x3 Monorail station end-on to a 1x3 Maglev station.

(Based on a report on Reddit: https://www.reddit.com/r/openttd/comments/115mc5d/in_rare_cases_using_a_path_signal_can_cause/)

[2TallTyler]

Related issue, the same can happen with depots: #8424

[PeterN]

Retracted that comment, the trains do not actually go past the end of the tile in this instance, but they do touch.