Support React v19 Compatibility

[TheOldVar]

React v19 introduces improvements and potential breaking changes. connectkit should be updated for compatibility.

Expected Behavior:

• Works seamlessly with React v19.
• No warnings or errors.
• Compatibility with React Server Components (if applicable).

Current Behavior:
Potential dependency issues or breaking changes with React v19.

Suggested Fix:

• Update peerDependencies to include React v19.
• Test and fix compatibility issues.