Flush variant of Accordion has border radius on the last item

Created by: lionel87

Prerequisites

• I have searched for duplicate or closed issues
• I have validated any HTML to avoid common problems
• I have read the contributing guidelines

Describe the issue

The docs describes the "flush" variant of the Accordion as an edge-to-edge mode, where borders and rounded corners are removed.

The last accordion-item still has rounded edges at the bottom left and right corners when focused and are in closed state, which I think is a bug.

Screen from the documentation page:

When using larger border radius values this becomes more visible:

Reduced test cases

https://getbootstrap.com/docs/5.2/components/accordion/#flush

What operating system(s) are you seeing the problem on?

Windows

What browser(s) are you seeing the problem on?

Chrome

What version of Bootstrap are you using?

5.x