hotfix: Don't de-dup special snow service schedules

[joshlarson]

Scope

Asana Ticket: Snow Service not showing up in the daily schedule service picker (incorrect schedules are showing for today)

Implementation

• A combo of the current set of service deduplication heuristics and the fact that the special snow service is called Fall/WinterWeekday and has no indication that it's unusual (aside from the fact that its typicality is :planned_disruption, but all CR services appear to be :planned_disruption right now), caused the special snow service to get collapsed into regular weekday service.
• Off the top of my head, I couldn't think of a good heuristic that would split this service out from other weekday services, so I just special-cased the start date of the current snow service schedule disruption.

Screenshots

Before

After

Notice that there's now an entry for Feb 22 - Feb 24, and also that the trips that show are different. 👇 is a screenshot of the timetable for today, which shows that the trips in the After screenshot are correct.

How to test

Go to schedule finder for Providence and see that there is an entry for the special snow schedules in the service-picker dropdown menu.