fix: Remove deprecation annotation on side navigation externalIconAriaLabel link property#4392

SpyZzey wants to merge 2 commits intomaincloudscape-design/components:mainfrom

fix/side-navigation-incorrect-deprecation-externalIconAriaLabelcloudscape-design/components:fix/side-navigation-incorrect-deprecation-externalIconAriaLabelCopy head branch name to clipboard