chore(stylelint): remove container from at-rule-no-unknown

[cdransf]

Description

Removes container from at-rule-no-unknown at the exception is no longer necessary. @container

Validation steps

1. Fetch the branch
2. Add an @container declaration to a CSS file
3. Restart stylelint
4. Verify the rule isn't marked as a stylelint violation

To-do list

• I have read the contribution guidelines.
• I have updated relevant storybook stories and templates.
• I have tested these changes in Windows High Contrast mode.
• If my change impacts other components, I have tested to make sure they don't break.
• If my change impacts documentation, I have updated the documentation accordingly.
• ✨ This pull request is ready to merge. ✨

[changeset-bot]

⚠️ No Changeset found

Latest commit: 47314fc

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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[github-actions]

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[github-actions]

File metrics

Summary

Total size: 4.30 MB^*

🎉 No changes detected in any packages

* Size determined by adding together the size of the main file for all packages in the library.
* Results are not gzipped or minified.
* An ASCII character in UTF-8 is 8 bits or 1 byte.

[marissahuysentruyt]

I think this is looking good! To test it, I added an @container rule for breadcrumb, and didn't see any errors in the browser console, dev console, or in the Problems pane in VSCode. 👍