Not triggering events when using cutom maskRef in Svelte

[angelvega93]

Describe the bug
Not triggering events when using custom maskRef.

To Reproduce
https://svelte.dev/repl/461c2cb07708415c8609d33730c05a5a?version=4.2.10

Expected behavior
It should trigger events.

Additional context
Replacing:

 if (opts instanceof IMask.InputMask) maskRef = opts;

With:

if (opts instanceof IMask.InputMask) {
  if (maskRef) maskRef.destroy();
  maskRef = initMask(el, opts);
}

Seems to fix the problem.