VACMS-13555: Remove hidden attribute for skip to content

[chriskim2311]

Description

Remove the hidden attribute when clicking the skip to content button

Testing done & Screenshots

Verified that the hidden attribute is not being added to the skip to content link. Tabbing back through the content shows the skip to content link again.

Old Behavior:

Screen.Recording.2023-09-25.at.9.57.52.AM.mov

New Behavior:

Screen.Recording.2023-09-25.at.9.56.02.AM.mov

QA Steps

1. Go to any page on VA.gov, for example: https://www.va.gov/health-care/about-va-health-benefits/
2. Start tabbing through the page immediately
3. You will see the Skip to content link appear once you focus on it
4. Hit enter to activate the link and jump down to the main content portion of the page
5. Now tab backwards through the page (SHIFT + Tab) to try and get back to the Skip to Content link.

Acceptance criteria

• a11y review
• The Skip to content link should always be available, even after it has been activated.

[chriskim2311]

@laflannery This is the final PR for the skip to content link, let me know if you find any issues!

[randimays]

We need to add more detail to PRs like this. A link to the ticket on any PR is required (unless there is no ticket). Screenshots or video would be helpful. QuickTime player is good for capturing video if you need to demonstrate changed behavior. And be sure to include the ACs of the story that would be relevant to the PR; reviewers need to know what to be testing for, also.

[chriskim2311]

Thanks Randi, Let me update this PR to make it more detailed!

[randimays]

LGTM!

[laflannery]

Tested multiple pages, Looks good! Appproved @chriskim2311