Enable SpaceAfterComma in scss-lint

What does this MR do?

• Enables SpaceAfterComma in scss-lint.
• Fixes all SpaceAfterComma lints.

Are there points in the code the reviewer needs to double check?

No.

Note that these are out of scope of this MR while I found rgba/scale-color literals appear and are not lint as scss-lint's ColorVariable doesn't look to care that.

Why was this MR needed?

To improve SCSS maintainability and consistency.

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• [n/a] Documentation created/updated
• [n/a] API support added
• Tests
  • [n/a] Added for this feature/bug
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

#23485 (moved)