HighlightHitParams attribute type should allow number for array indexing

[aldenquimby]

Description

• Algolia currently allows highlighting array fields like this:

      {hit._highlightResult.tagNames.map((_, i) => (
        <Fragment key={i}>
          {i !== 0 ? ', ' : null}
          {components.Highlight({
            hit,
            // eslint-disable-next-line @typescript-eslint/ban-ts-comment -- array index is allowed, type is off
            // @ts-expect-error
            attribute: ['tagNames', i],
          })}
        </Fragment>
      ))}

• example showing this works:
  

• ideally the above code would not require the ts-ignore / eslint-ignore

Reproduction

• I am not sure how to create a preview for this, because it depends on the server-side index having an array field

Preview →

Steps

• see code above

Expected behavior

• no type/lint suppression is required

Environment

• OS: [e.g. Windows / Linux / macOS / iOS / Android]: all
• Browser: [e.g. Chrome, Safari]: all
• Autocomplete version: [e.g. 1.0.0]: 1.17.2

[Haroenv]

Thanks for creating a PR. Alternatively you could also cast the index as a string (that's what the interpreter would do anyway), but I think it makes sense to change