SerialPort.connected not implemented

[andrewgoz]

firefox-webserial/src/polyfill.ts

Line 11 in 6196c08

export class SerialPort extends EventTarget {

https://developer.mozilla.org/en-US/docs/Web/API/SerialPort/connected

[delacor]

Yes!
This problem also occurs on https://flasher.meshtastic.org/