Fix nesting and font weight when parent is a title

[bartaz]

Done

Fixes font weight and indent of the items nested under the title items.

Fixes #4490

QA

• Open demo
• Make sure that when parent element is a bolded title, its children are not bolded and are properly indented

Check if PR is ready for release

If this PR contains Vanilla SCSS code changes, it should contain the following changes to make sure it's ready for the release:

• PR should have one of the following labels to automatically categorise it in release notes:
  • Feature 🎁, Breaking Change 💣, Bug 🐛, Documentation 📝, Maintenance 🔨.
• Vanilla version in package.json should be updated relative to the most recent release, following semver convention:
  • if CSS class names are not changed it can be bugfix relesase (x.x.X)
  • if CSS class names are changed/added/removed it should be minor version (x.X.0)
  • see the wiki for more details

Screenshots

[webteam-app]

Demo starting at https://vanilla-framework-4501.demos.haus

[ilayda21]

🚀