AB#326 Fix cancellation related bugs on stop page

[hjvuor]

Cancelled trips result in some unwanted behavior on stops that are the last stop of some route. The logic is based on the pickupType of the stoptime, but cancelled trips omit this property so the current logic fails.

Proposed Changes

• On departure list, cancelled trips are now correctly shown with arriving / last stop as the headsign
• Timetable view correctly filters out arrivals even if they belong to a cancelled trip

Pull Request Check List

• A reasonable set of unit tests is included
• Console does not show new warnings/errors
• Changes are documented or they are self explanatory
• This pull request does not have any merge conflicts
• All existing tests pass in CI build

Review

• Read and verify the code changes
• Test the functionality by running the UI locally with all popular browsers available in your platform
• Check that the implementation matches the design, when such one is defined in an issue in Azure Boards
• Merge the pull request