Fix using the image container with lazyloaded images

[jmuzina]

Done

Specifically targets .lazyloaded images for display: contents to avoid applying contents display to .lazyload

QA

• Check out feat: /data/spark/what-is-spark build canonical.com#1409
• Set vanilla-framework version to jmuzina/vanilla-framework#5402-image-aspect-ratio-lazyloaded-fix
• Set sass version to 1.79.0
• Open what is Spark page
• Verify the lazily loaded "how do companies use spark" images load and have the correct aspect ratio

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 release (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
• Any changes to component class names (new patterns, variants, removed or added features) should be listed on the what's new page.

[webteam-app]

Demo

Jenkins

demos.haus

[bartaz]

LGTM