Describe the bug

Dropdown button radius inside a BButtonGroup was broken at some point, this is a snapshot from the docs example:

Reproduction

https://bootstrap-vue-next.github.io/bootstrap-vue-next/docs/components/button-group.html

Used Package Manager

n/a

Validations

• Have tested with the latest version. This is still alpha version and sometime things change rapidly.
• Follow our Code of Conduct
• Read the Contributing Guide.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A, please open a GitHub Discussion instead.
• The provided reproduction is a minimal reproducible of the bug.