message: Fix the coordinates being out by (1,1) for urxvt mouse reporing
  This fixes the mouse support in lazydocker.
diff: @@ -674,8 +674,8 @@ export class Emulator implements EmulatorApi {
  if (this.urxvtMouse) {
  this.log("sendEvent(): urxvtMouse");
  - const x = pos.x + 1;
  - const y = pos.y + 1;
  + const x = pos.x;
  + const y = pos.y;
  this.send('\x1b[' + (button+32) + ';' + x + ';' + y + 'M');
  return;
  }
  