Darkmode: `btn-outline-dark` is not visible in button group component

Created by: teaca-sebastian

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

https://getbootstrap.com/docs/5.3/components/button-group/#sizing https://getbootstrap.com/docs/5.3/components/buttons/

The bug is pretty self-explainatory, this happens because .btn-light .btn-dark .btn-outline-light & .btn-outline-dark don't change with data-bs-theme="dark", and there is no "body" color to change along with the data attribute. To properly solve this issue .btn-body and .btn-outline-body classes should be added to complement the darkmode feature.

Reduced test cases

See above

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

Windows

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

No response

What version of Bootstrap are you using?

v5.3