[checkWebSocketsSupport] wss://echo.websocket.org:443/ is no longer available

[marcio199226]

Hi we can't test anymore if the websocket is supported and not blocked due to used services to estabilish wss connection (wss: //echo.websocket.org: 443 /) since is down, instead we could use wss://echo.websocket.events/.ws. (I tried it and it works)

Furthermore we can add some improvements too. Now we can't differentiate between an error and a success connection in the provided callback to checkWebSocketsSupport fn unless we verify isWebSocketsBlocked variable that is not really intuitive in my opinion.