Editor: Correct alignment for “Remove tag” icon in classic editor.

Follow-up to [38880], [61645].

Props umesh.nevase, sabernhardt, SergeyBiryukov.
Fixes #65133.

git-svn-id: https://develop.svn.wordpress.org/trunk@62279 602fd350-edb4-49c9-b593-d223f7449a82