CU/10187-Chika-AddBackAnnouncementForScreenreaderUsers

[cadibemma]

Description of Change

• Adds an accessibility label to read out prior to the "back" link's copy. For example, the screenreaders should announce "back to benefits, link" or "back to health, link"

Screenshots/Video

Testing

• Tested on iOS
• Tested on Android

Reviewer Validations

• Add an accessibility label of "back to" that reads out before the current / existing readout on the child screen links
• Send to @brea11y for review

PR Checklist

Reviewer: Confirm the items below as you review

• PR is connected to issue(s)
• Tests are included to cover this change (when possible)
• No magic strings (All string unions follow the Union -> Constant type pattern)
• No secrets or API keys are checked in
• All imports are absolute (no relative imports)
• New functions and Redux work have proper TSDoc annotations

For QA

Run a build for this branch