Editor: fix inconsistencies in global styles feature selectors.

Corrects feature selector output for block style variations in global styles.

Props isabel_brison, dmsnell, talldanwp, audrasjb, desrosj.
Fixes #65265.


git-svn-id: https://develop.svn.wordpress.org/trunk@62607 602fd350-edb4-49c9-b593-d223f7449a82

Author: tellthemachines