[BUG] Progress bar with user_interruption_allowed not displaying normal buttons after reaching 100 percent

[DerekReddy]

Describe the bug
When using the /user_interruption_allowed flag for the progress bar popup view, the cancel button is not replaced with the main and secondary buttons after hitting 100%

To Reproduce
Steps to reproduce the behavior:

1. Download latest release of IBM Notifier and place in /Applications/
2. Run the 'Progress Bar with Cancel button' script from the example scripts
3. The cancel button remains after hitting 100%
4. Receive 'Progress bar completed successfully' if clicking the cancel button after it hits 100. Appears to be a graphical issue.

Expected behavior
Upon hitting 100 percent complete, the main button saying "OK" should display instead of the cancel button.

Screenshots

Desktop (please complete the following information):

• OS: macOS 12.5.1 & 13.0 beta
• Project version: release 2.8.0