MKGeoJSONDecoder can't parse escaped Double-Quote characters

When parsing valid GeoJSON data containing escaped double-quotes, the MKGeoJSONDecoder fails with error.

Steps to reproduce:

Download and copy the GeoJSON from the Berlin city API server into a String: https://www.berlin.de/sen/web/service/liefer-und-abholdienste/index.php/index/all.gjson?q=&plz=10117&art=B%C3%BCrobedarf&ipp=20&page=1

OR
use the following GeoJSON data

{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "geometry": {
        "type": "Point",
        "coordinates": [
          13.38678,
          52.52548
        ]
      },
      "properties": {
        "title": "1848",
        "href": "/sen/web/service/liefer-und-abholdienste/index.php/detail/1848",
        "description": " <a href=\"/sen/web/service/liefer-und-abholdienste/index.php/detail/1848\">Mehr...</a>",
        "id": "/sen/web/service/liefer-und-abholdienste/index.php/detail/1848"
      }
    }
  ]
}

1. Create a Data object from the string using .utf8 format
2. Create a MKGeoJSONDecoder object
3. Try and parse the data using `try decoder.decode(data)` in a do..catch block
4. The catch block will report an error saying: “The data couldn’t be read because it isn’t in the correct format.”

If we change the description string and remove the escaped double-quotes `“\`, the MKGeoJSONDecoder decodes the data without issue.

The following code block when executed on a playground should show the error:

//Valid data verifed using http://geojson.io

    if let data = """
            {
                "features": [
                    {
                        "geometry": {
                            "coordinates": [
                                13.38678,
                                52.52548
                            ],
                            "type": "Point"
                        },
                        "properties": {
                            "description": " \" text in double quotes \" ",
                            "href": "/sen/web/service/liefer-und-abholdienste/index.php/detail/1848",
                            "id": "/sen/web/service/liefer-und-abholdienste/index.php/detail/1848",
                            "title": "1848"
                        },
                        "type": "Feature"
                    }
                ],
                "type": "FeatureCollection"
            }
        """.data(using: .utf8) {
        let decoder = MKGeoJSONDecoder()
        do {
            let decoded = try decoder.decode(data)
            if let firstFeature = decoded.first as? MKGeoJSONFeature,
                let firstCoordinate = firstFeature.geometry.first?.coordinate {
                print("Latitude: \(firstCoordinate.latitude) Longitude : \(firstCoordinate.longitude)")
            }
           
        } catch (let error) {
            print(error.localizedDescription)
        }
    }