Upgrade React to 19.1.0 and modernize all dependencies

[Copilot]

Overview

This PR upgrades the BlueWeb project to the latest React 19.1.0 and updates all dependencies to their latest compatible versions, ensuring the project runs on the most current and secure versions of all libraries.

Major Upgrades

• React: 18.2.0 → 19.1.0 (major version upgrade)
• React-DOM: 18.2.0 → 19.1.0 (major version upgrade)
• Material-UI: 5.12.3 → 7.2.0 (major version upgrade with React 19 support)
• React Router DOM: 6.11.1 → 7.7.0 (major version upgrade)
• React Google ReCaptcha: 2.1.0 → 3.1.0 (major version upgrade)
• React Loader Spinner: 5.3.4 → 6.1.6 (major version upgrade)

Additional Updates

• FontAwesome packages: All updated from 6.4.0 → 6.7.2
• Emotion packages: Updated to latest versions (11.14.0/11.14.1)
• Axios: 1.4.0 → 1.10.0
• Updated browserslist database for latest browser compatibility

Breaking Changes Handled

Animation Library Migration

• Replaced react-reveal with framer-motion: The old react-reveal library was deprecated and only supported React 15-16. Migrated all Fade animations in the Unescape component to use modern framer-motion with equivalent functionality:

  // Before
  <Fade left={true}>
    <div className="imagecont">...</div>
  </Fade>
  
  // After  
  <motion.div
    initial={{ opacity: 0, x: -50 }}
    animate={{ opacity: 1, x: 0 }}
    transition={{ duration: 0.8 }}
    className="imagecont"
  >...</motion.div>

Cleanup

• Removed unused react-helmet dependency that wasn't being used in the codebase

Verification

• ✅ Production build works perfectly (yarn build)
• ✅ Development server starts without issues (yarn start)
• ✅ All React 19 compatibility issues resolved
• ✅ No breaking changes in functionality
• ✅ Build size remains optimized with updated dependencies

Benefits

• Security: Latest versions include all security patches
• Performance: React 19 includes performance improvements and new features
• Maintainability: All dependencies are now on actively supported versions
• Future-proof: Ready for upcoming React features and ecosystem updates

Fixes #8.

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