[TASK] Unify padding for page-navigation-links

Current page is not linked. It's padding should
be equal with the linked page-numbers.

Change-Id: Ia4161b6b3d0da9f9d61d7714732a34cc71a797af
Resolves: #59507
Releases: master
Reviewed-on: https://review.typo3.org/30674
Reviewed-by: Georg Ringer
Tested-by: Georg Ringer