Place aria-controls on the main search input

[cirkut]

What did you expect to happen?

Search input should contain an aria-controls attribute in addition to the aria-owns attribute to meet WCAG 2.0 Criterion 4.2.1

What happened instead?

No aria-controls is placed on the search input. There is only the aria-owns attribute.

How can we reproduce this behavior?

Install and use plugin as intended.

Can you provide a link to a page which shows this issue?
https://michiganvirtual.org/login/

Technical info

• WordPress version: 4.9.8
• Algolia Search plugin version: 2.11.2