Add option to override aria-label on Pager component

[adamfsage]

Description

[Accessibility] I would like the option to override the aria-label in the Pager component, so that I can improve the voiceover message and have it match a ticket's specification

Suggested solution

A custom aria label prop in the component taking a string, which overrides the existing aria label that gets set

Demo URL

No response

Alternatives

No response

Additional context

No response

Confidentiality

• [X] I confirm there is no confidential or commercially sensitive information included.

[edleeks87]

FE-6378

[nicktitchmarsh]

@adamfsage could you contact me on Teams or Slack as we would like to clarify your requirements