[Global options]Button Group block - Appearance, Letter case, Line height options not working

[rodica-andronache]

Description

Similar to #2163 , the same issue happens for the Global options.

Step-by-step reproduction instructions

1. Add a Button Group block with two buttons.
2. Try to change the Appearance, Letter case, Line height options for the Button Group, from the Global options.
3. Check the Buttons on front-end. The options don't apply well.

Screenshots, screen recording, code snippet or Help Scout ticket

https://secure.helpscout.net/conversation/2563422218/412997?viewId=212385

Environment info

No response

Is the issue you are reporting a regression

No

[girishpanchal30]

@rodica-andronache I have fixed it with this PR #2812