Fix label filter single quote

What does this MR do?

Escapes the single quote character for the label filter dropdown so that labels with single quote characters won't break the dropdown.

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

Shouldn't be

Why was this MR needed?

Fixes an existing bug

What are the relevant issue numbers?

Closes #20585 (closed)

Screenshots (if relevant)

Before:

After:

Does this MR meet the acceptance criteria?

• CHANGELOG entry added
• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the style guides
• Branch has no merge conflicts with master (if you do - rebase it please)
• Squashed related commits together