Issue #2950 [LanguageNavigation v2] Accessibility and usability improvments

[renow-luxembourg]

Q	A
Fixed Issues?	Fixes #2950
Patch: Bug Fix?
Minor: New Feature?	Yes
Major: Breaking Change?
Tests Added + Pass?	Yes
Documentation Provided	Yes (code comments and or markdown)
Any Dependency Changes?
License	Apache License, Version 2.0

Changes description :

• Replace the nav container by a div and move the aria-label attribute to the ul element
• Automatically hide the component if the website is in only 1 language
• Display both the ISO code and the full language name. One of them can be visually hidden using some CSS similar to the "sr-only" class.
• Add a parameter in the cq_dialog to display the language as a dropdown list using the disclosure design pattern

If it's easier, I can split this pull request into several.

[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