fix: watch() typeof check on array is always false

[hichem-dahi]

🔗 Linked issue

resolves #849, resolves #768

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• [x ] 🐞 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

Destructured the watched values in the callback and applied the typeof check directly on state. Now:

• If state is an object (non-null), it calls deepSync.
• If state is a primitive, it assigns proxy.value directly.

The watch callback was checking the typeof the entire array [props.revision, props.state], which always returns "object", causing it to always enter the deepSync branch — even when props.state is a primitive (e.g., string, number).