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

[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

[vladbailescu]

@renow-luxembourg , thank you for submitting this PR! Since the changes affect the HTML structure of the component output, they are not backwards compatible and will break existing implementations on automatic upgrades, therefore they can only be considered for a future version of the LanguageNavigation component.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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