one-way-number-mask slow

```
{{one-way-number-mask
value=val
update=(action (mut val))
class="someclass"
options=(hash groupSeparator=" ")
}}
```

This code generates ton of [violation] errors in JS console:

```
[Violation] 'setTimeout' handler took 144ms
[Violation] 'input' handler took 693ms
```

And works slow. What could be the problem here?

Start by reproducing the provided one-way-number-mask example with the shown value, update action, class, and groupSeparator option, then inspect the browser console timings for the input and setTimeout handlers. Compare the behavior with a minimal version of the example to isolate the source of the delay. Done means the performance cause is identified and a verified fix or actionable diagnosis is documented.

Rédigé par le modèle d'indexation à partir du texte de l'issue.