Wave JSON body read error: add system code for HTTP 400 so the client can react to sending an invalid body by capturing such body and logging locally for further analysis

[itadapter]

Related: #833

WorkContext.DoGetRequestBodyAsJsonDataMapAsync

catch(Exception error)
        {
          throw new HTTPStatusException(WebConsts.STATUS_400,
                                        WebConsts.STATUS_400_DESCRIPTION + " body processing error",//<===== ADD A TAG So we can search for it
                                        error.ToMessageWithType(),
                                        error);
        }