DecodingError: ManeuverDirection "reverse" not found

Hi there

We are frequently getting an error from mapbox when trying to calculate a route using the MapboxDirections API:

 ▿ underlying : Optional<Error>
      ▿ some : DecodingError
        ▿ dataCorrupted : Context
          ▿ codingPath : 10 elements
            - 0 : CodingKeys(stringValue: "routes", intValue: nil)
            ▿ 1 : _JSONKey(stringValue: "Index 0", intValue: 0)
              - stringValue : "Index 0"
              ▿ intValue : Optional<Int>
                - some : 0
            - 2 : CodingKeys(stringValue: "legs", intValue: nil)
            ▿ 3 : _JSONKey(stringValue: "Index 9", intValue: 9)
              - stringValue : "Index 9"
              ▿ intValue : Optional<Int>
                - some : 9
            - 4 : CodingKeys(stringValue: "steps", intValue: nil)
            ▿ 5 : _JSONKey(stringValue: "Index 0", intValue: 0)
              - stringValue : "Index 0"
              ▿ intValue : Optional<Int>
                - some : 0
            - 6 : CodingKeys(stringValue: "bannerInstructions", intValue: nil)
            ▿ 7 : _JSONKey(stringValue: "Index 0", intValue: 0)
              - stringValue : "Index 0"
              ▿ intValue : Optional<Int>
                - some : 0
            - 8 : CodingKeys(stringValue: "primary", intValue: nil)
            - 9 : CodingKeys(stringValue: "modifier", intValue: nil)
          - debugDescription : "Cannot initialize ManeuverDirection from invalid String value reverse"
          - underlyingError : nil
    - code : nil
    - message : nil

When diving in to this further, it looks like this enum value indeed does not exist in the code:

https://github.com/mapbox/mapbox-directions-swift/blob/main/Sources/MapboxDirections/RouteStep.swift

Here is a snippet of an example of one of the offending JSON responses:

                            "bannerInstructions": [
                                {
                                    "primary": {
                                        "components": [
                                            {
                                                "type": "text",
                                                "text": "Enter Winwick Interchange and take the 3rd exit"
                                            }
                                        ],
                                        "degrees": 307,
                                        "driving_side": "left",
                                        "type": "roundabout",
                                        "modifier": "reverse",  <---- ???? 
                                        "text": "Enter Winwick Interchange and take the 3rd exit"
                                    },
                                    "distanceAlongGeometry": 0
                                }
                            ],

Unless i am mistaken it appears the library is not equipped to decode this object.

Keen to hear of a solution, hope this is helpful!

Thanks.

Start with Sources/MapboxDirections/RouteStep.swift, especially the ManeuverDirection enum, and compare its accepted values with the reported Mapbox JSON containing modifier "reverse". Reproduce decoding with the example response and confirm that the route can be decoded successfully without the DecodingError.