function setSubtract(left, right) {
  const ret = new Set();
  for (const entry of left) {
    if (!right.has(entry)) {
      ret.add(entry);
    }
  }
  return Array.from(ret);
}
Toggles enabled/disabled state of the given displays.

If "persistent", then this is saved between restarts.

@param {ToggleEnabledDisplaysArgs} args