Fix: Container width inheritance, Divider visibility, and missing Icons

[flutterjs-dev]

flutterjs_web now wokring with mutiple and naviation to

🔗 Related Issue

Fixes # (issue)

🏗️ Type of Change

• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 📚 Documentation update
• 🎨 Code style update (formatting, local variables)
• 🔨 Refactoring (no functional changes, no api changes)
• 🧪 Tests
• ⚙️ CI/CD

📋 Checklist

• I have read the CONTRIBUTING doc
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works"