Fix underline hover style for .list-group-item-action

[SamiNajim2]

Summary

This PR fixes a styling inconsistency in Bootstrap’s List group component where active .list-group-item-action elements lose their underline on hover when link hover decoration is enabled. This behavior contradicts global link styles and creates an inconsistent user experience.

Problem

When hovering over an active list group link (e.g., in the “Links and Buttons” example on the List group docs page), the underline disappears due to a text-decoration: none rule applied to hover/focus states. This prevents active list items from inheriting the expected $link-hover-decoration style.

This issue was reported here: #41806

Changes

• Updated scss/_list-group.scss:
  • Removed the text-decoration: none; override inside the hover/focus selector for .list-group-item-action:not(.active) so that active list group links retain their underline on hover.

Testing

• Ran npm run dist to rebuild styles
• Ran npm run docs-serve locally and verified:
  • Active list group links maintain underline styling on hover, matching global link hover decoration behavior