fix(component): fix accessibility issue for post-breadcrumbs component

[alionazherdetska]

📄 Description

This PR fixes accessibility issues in the post-breadcrumbs component by:

• Wrapping breadcrumb items in proper <li> elements for semantic HTML structure
• Moving aria-current="page" attribute from the breadcrumb item to the parent list item
• Updating CSS selectors to target the new DOM structure (li[aria-current="page"] post-breadcrumb-item)

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📝 Checklist

• ✅ My code follows the style guidelines of this project
• 🛠️ I have performed a self-review of my own code
• 📄 I have made corresponding changes to the documentation
• ⚠️ My changes generate no new warnings or errors
• 🧪 I have added tests that prove my fix is effective or that my feature works
• ✔️ New and existing unit tests pass locally with my changes

[changeset-bot]

🦋 Changeset detected

Latest commit: 2837732

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 12 packages

Name	Type
@swisspost/design-system-components	Patch
@swisspost/design-system-components-angular-workspace	Patch
@swisspost/design-system-components-react	Patch
@swisspost/design-system-documentation	Patch
@swisspost/design-system-nextjs-integration	Patch
@swisspost/design-system-components-angular	Patch
@swisspost/design-system-styles	Patch
@swisspost/design-system-tokens	Patch
@swisspost/design-system-icons	Patch
@swisspost/design-system-styles-primeng	Patch
@swisspost/internet-header	Patch
@swisspost/design-system-styles-primeng-workspace	Patch

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[swisspost-bot]

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• https://preview-6294--swisspost-design-system-next.netlify.app

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[alizedebray]

Can't this be solve by adding a role="listitem" on the post-breadcrumb-item host?

[alionazherdetska]

I tried applying role=listitem directly on the <post-breadcrumb-item> host. However, this introduced another accessibility issue: automated checks (Axe) report Required ARIA parent role not present: list because the host is still a custom element, not a native <li>.