SentrySpan does not have a `data` field

https://develop.sentry.dev/sdk/event-payloads/span/

{
      "data": {
        "type": "xhr",
        "method": "GET",
        "url": "https://api.covid19api.com/summary"
      },
      "description": "GET https://api.covid19api.com/summary",
      "op": "http",
      "parent_span_id": "ae1192f4fbda20ff",
      "span_id": "9f27dcdf0a77661e",
      "start_timestamp": 1623849813.575222,
      "status": "ok",
      "tags": {
        "http.status_code": "200"
      },
      "timestamp": 1623849814.675915,
      "trace_id": "1e5acd8e53254c9db2be50cb40e9ada4"
    }

during ser/deser, we’re losing the data field

[marandaneto]

let’s do a quick fix then before we get into #1537 which is gonna take longer, so we don’t lose the data field during round trip ser/deser

[bruno-garcia]

Yeah and given we’re rethinking this API now its’ better we avoid expanding the public API (even though Data could just use Extra as I believe is done on other SDKs).

We plan to change to change serialization (see #1537 ) that will address such cases where we don’t map completely to all other Sentry SDKs but for the time being to address this React Native issue would be nice to just special case Data as @marandaneto suggested