Reviews: Accessibility issues in Lighthouse reports fixed

Minor adjustments related to accessibility issues were made in our Reviews apps :hammer_and_wrench:

Previously, author names weren't included in the aria-labels for the reviewer's link and the Review Source didn't match its content. This caused errors in Lighthouse reports for client websites, lowering their overall accessibility rating

Now, each reviewer's link has author name in the aria-label, and the Review Source matches the link text. So, no more accessibility errors related to these parts in Lighthouse reports

Accessibility rating before/after