Fix issue of nested dropdowns. Fixes #2963

[sebastian-bartkowiak]

This is a bugfix. Fixes #2963

Proposed solution

As suggested in issue - forcing a direct child selector on .dropdown-menu element fixes mentioned issue.

Tradeoffs

None.

Testing Done

Build is working and raised issue is resolved.

Changelog updated?

No.

[msigwart]

Just stumbled on this as well and this fixes the issue. Any chance we can get this merged @jgthms? 🙏

In the meantime, I've manually fixed this by overwriting the styles:

    .dropdown.is-hoverable:hover .dropdown-menu {
        display: none;
    }
    .dropdown.is-hoverable:hover > .dropdown-menu {
        display: block;
    }