Catriona MacKenzie

Fix(1030): adds a customizable property for aria-label

5

The aria-label for the search input is currently hard-coded to "Search for option". This causes problems for screen reader users and fails WCAG 2.1 criteria [2.5.3](https://www.w3.org/TR/WCAG21/#label-in-name) and [3.3.1](https://www.w3.org/TR/WCAG21/#labels-or-instructions). This PR...