Fix repo title alignment

What does this MR do?

Adds an extra pixel margin to the hamburger button so that it matches the baseline of the repo title

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

Shouldn't be any 😄

Why was this MR needed?

Resolve UI Inconsistency

What are the relevant issue numbers?

Closes #21408 (closed)

Screenshots (if relevant)

Before:

After:

Does this MR meet the acceptance criteria?

• CHANGELOG entry added
• Tests
  • 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