[Feature Request] Remove unnecessary spacing below the progress bar

[kryptonit1]

Describe the bug
When using the pop-up UI together with the progress bar accessory view there's unnecessary spacing below the progress bar. I'm guessing that this is to make room for the OK/Cancel button to be displayed below if necessary, but it would be neat if this unnecessary spacing could be removed when you have configured the progress bar accessory view without any option that enables buttons. Or if the pop-up automatically can expand it's height when necessary (e.g. when a button needs to be displayed).

To Reproduce
Steps to reproduce the behavior:
Launch a pop-up with a progress bar as accessory view.

Expected behavior

Screenshots

Desktop (please complete the following information):

• OS: macOS 14.1.1
• Project version: 3.0.3

Additional context
None