Respect min-length-value option

[Simonpedro]

When the min length value is set to 0, the autocomplete will not fetch the data from the server. This is a problem when a consumer wants to also show something when the input is empty.

For example, it would unblock the following use case:

<input
  name="search"
  data-autocomplete-target="input"
  data-autocomplete-url-value="/search?q={q}"
  data-autocomplete-min-length-value="0"
  data-action="click->autocomplete#onInputChange"
/>

in which some results are shown as soon as the input is focused.

It's a simple way to address the "fetch on focus" issue and an alternative to "fetch on focus" PR.

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[Simonpedro]

Seems it didn't gain traction.

[arrowcircle]

Any updates on merging this?