Fix Accessibility Violation - Add Label to Language Switcher

[huangkevin-apr]

🔗 Linked issue

resolves #2273

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

This PR fixes an accessibility violation where the language switcher dropdown in the navigation lacks an accessible name, making it unusable for screen reader users.

Problem

The IBM Equal Access Accessibility Checker identified a violation:

• Issue: The SVG element (language switcher icon) has no accessible name
• Element: component within a dropdown trigger
• Impact: Screen reader users cannot identify the purpose of this interactive element. They cannot tell that it's a language switcher or understand what will happen when they interact with it.

Solution

Added a label="Language switcher" prop to the dropdown component, which provides a clear, descriptive accessible name for screen reader users. This label:

• Clearly identifies the control as a language switcher
• Follows common web conventions for language selection controls
• Provides meaningful context without cluttering the visual design

[netlify]

👷 Deploy request for nuxt pending review.

Visit the deploys page to approve it

Name	Link
🔨 Latest commit	12a89f9