fwdbwd fix - #1559

@pablohoch @traines-source @PartTimeDataScientist

this is a quickfix for one of the problems but I would rather not merge it, rewrite the matching logic and fix both in one go

https://www.openstreetmap.org/way/1111870971#map=19/50.110989/8.683182&layers=SD

https://api.transitous.org/?time=2026-08-03T14%3A54%3A00.000Z&fromPlace=49.872775%2C8.651177&toPlace=50.1106444%2C8.6820917&withFares=true&numLegAlternatives=3&joinInterlinedLegs=false&preTransitModes=WALK%2CRENTAL&postTransitModes=WALK%2CRENTAL&directModes=WALK%2CRENTAL&preTransitRentalFormFactors=BICYCLE&postTransitRentalFormFactors=BICYCLE&directRentalFormFactors=BICYCLE&noCompulsoryReservation=false&maxMatchingDistance=250&fromName=Darmstadt%2C+Hessen%2C+Deutschland&toName=Frankfurt%2C+Frankfurt+am+Main%2C+Hessen%2C+Deutschland

https://api.transitous.org/?itineraryId=ClchGeJYF7fvSEApltBdEmdNIUAyG2RlLURFTEZJX2RlOjA2NDExOjExMjI2Ojg6ODmjqgmi7u9IQEEAwocSLVkhQEi82MLTBlCM3sLTBloGUkVOVEFMYAEKtQEKDFJCODIgKDI1MTgwKRIiMjAyNjA4MDNfMTY6MTlfZGUtREVMRklfMzMxMTcxNzk2ORobZGUtREVMRklfZGU6MDY0MTE6MTEyMjY6ODo4IaOqCaLu70hAKQDChxItWSFAMhpkZS1ERUxGSV9kZTowNjQxMjoxMDoxNjoxNjleZ0P%2BmQ1JQEGU9ZuJ6VIhQEiM3sLTBlDw6MLTBloNUkVHSU9OQUxfUkFJTGABcQAAAAAAAAAACnYaGmRlLURFTEZJX2RlOjA2NDEyOjEwOjE2OjE2IV5nQ%2F6ZDUlAKZT1m4npUiFAMhdkZS1ERUxGSV9kZTowNjQxMjo4OjE6MTnXOQZkrw1JQEFh56bNOFUhQEjw6MLTBlCc68LTBloEV0FMS2ABaQAAAAAAAAAACpIBCgIxMhIiMjAyNjA4MDNfMTc6MDlfZGUtREVMRklfMzAzMTg5MjY0NhoXZGUtREVMRklfZGU6MDY0MTI6ODoxOjEh1zkGZK8NSUApYeemzThVIUAyF2RlLURFTEZJX2RlOjA2NDEyOjI6MjoyOSNKe4MvDklAQVrTvOMUXSFASJzrwtMGUMjtwtMGWgRUUkFNYAEKUxoXZGUtREVMRklfZGU6MDY0MTI6MjoyOjIhI0p7gy8OSUApWtO84xRdIUA5Jr5%2FmCkOSUBBAL%2BQHztdIUBIyO3C0wZQhO7C0wZaBlJFTlRBTGAB&joinInterlinedLegs=false&detailedTransfers=true&detailedLegs=true&withFares=true&numLegAlternatives=3&language=de&transitModes=TRANSIT&pedestrianProfile=FOOT&useRoutedTransfers=false&requireBikeTransport=false&requireCarTransport=false&noCompulsoryReservation=false&preTransitModes=WALK%2CRENTAL&postTransitModes=WALK%2CRENTAL&preTransitRentalFormFactors=BICYCLE&postTransitRentalFormFactors=BICYCLE&ignorePreTransitRentalReturnConstraints=false&ignorePostTransitRentalReturnConstraints=false&elevationCosts=NONE&cyclingSpeed=4&pedestrianSpeed=1&maxMatchingDistance=250&maxPreTransitTime=900&maxPostTransitTime=900&fromName=Darmstadt%2C+Hessen%2C+Deutschland&toName=Frankfurt%2C+Frankfurt+am+Main%2C+Hessen%2C+Deutschland&debug=#16.82/50.110962/8.68229