ui: Make `top_padding` an associated function on the `TitleBar` (#9577)

This PR makes the function for computing the top padding for the
`TitleBar` an associated function.

Release Notes:

- N/A

Marshall Bowers committed 2y ago

6cec3891250a86e92dab64a9a531bc95f5db597f

Parent: 9ab7a22

Committed by GitHub <noreply@github.com> on 3/20/2024, 2:55:09 PM