Is your feature request related to a problem? Please describe.

Currently joomla-field-fancy-select uses Choices.js with fuseOptions.threshold = 0.3.
This causes fuzzy matching even for numeric lists. For example, searching 1043 also returns results like 1003, 103, 1031, etc.
In some cases this behaviour is undesirable when exact matching is required.

Describe the solution you'd like

I was thinking it might be useful to make the fuseOptions.threshold configurable through an attribute (e.g. data-fuse-threshold="0").
By default it could stay at 0.3, so the change would be fully backward compatible and not affect existing installations.

Additional context

File: media/system/js/fields/joomla-field-fancy-select.js
Relevant code:

fuseOptions: {
  threshold: 0.3 // Strict search
}