React 19, Update Dependencies

[kwinto]

Related PR: Cognigy/chat-components#181

This PR updates React to version 19. We also update many dependencies to make it work and close existing vulnerabilities.

How to Test:
TODO

[graymalkin77]

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[Copilot]

Pull Request Overview

This PR upgrades the project from React 18 to React 19 and updates several related dependencies to ensure compatibility and address security vulnerabilities. The main focus is on updating the Redux ecosystem and development tooling to work with React 19.

Key Changes

• Updated React and React DOM peer dependencies to prioritize version 19
• Upgraded Redux Toolkit, React-Redux, and Redux to their latest major versions compatible with React 19
• Replaced deprecated redux-devtools-extension package with the modern @redux-devtools/extension

Reviewed Changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 1 comment.

File	Description
package.json	Updated React to v19, upgraded Redux ecosystem packages (@reduxjs/toolkit, react-redux, redux), replaced deprecated devtools package, removed unused dependencies, and adjusted peer dependencies to prioritize React 19
src/webchat/store/store.ts	Updated import statement to use the new @redux-devtools/extension package instead of the deprecated redux-devtools-extension

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