"Accessibility -> Missing the link to "Skip to main content on A&R website

## Description
**How to replicate:**
* Navigate to the A&R website on the Test environment
* Using the keyboard try to navigate through the site

**Issue:**
* The site is missing the option to “Skip to the main content” when navigating using the keyboard

## Linked issues
relates to
- [x] ~[BRS-822](https://bcparksdigital.atlassian.net/browse/BRS-822)~

Start by reproducing the issue on the A&R website in the Test environment with keyboard navigation, as described in the issue. Review the related BRS-822 issue for context; done means keyboard users can activate a “Skip to the main content” option while navigating the site.

Written by the indexing model from the issue text.