Fix inconsistent options dropdown caret on mobile viewports

What does this MR do?

Change the options dropdown caret from left aligned to right aligned (only visible on mobile viewports)

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

Check if there are any other dropdowns that have left aligned carets

Why was this MR needed?

Resolve UI inconsistency as some dropdown carets were already right aligned

Screenshots (if relevant)

Before:

After:

Does this MR meet the acceptance criteria?

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

What are the relevant issue numbers?

Closes #22086 (closed)