fix: ensure JSX transform works after eject with React 17 (#9953)

[Aarshpatel12]

Description

This PR fixes issue #9953 by ensuring that the new JSX transform introduced in React 17 continues to work even after ejecting a Create React App project.

Currently, after ejecting, the Babel configuration does not include the necessary plugin for the new JSX runtime, resulting in ReferenceError: React is not defined unless import React is manually added to every file.

Fix

• Added @babel/preset-react with runtime: 'automatic' option to the Babel configuration in the ejected Webpack setup.
• Ensured consistent JSX transformation behavior both before and after ejecting.
• This aligns with React 17+ best practices where explicit import React is no longer required when using the automatic runtime.

Related Issue

Closes #9953

Checklist

• [x] Ensured React 17+ JSX transform works after eject
• [x] Verified no breaking changes for projects using older JSX runtime
• [x] Added Babel preset configuration with automatic runtime

Preview

After this fix:

• Users can remove import React from 'react' safely in component files
• No more ReferenceError: React is not defined after ejecting

Let me know if further changes are needed!

[Aarshpatel12]

Hi maintainers 👋 Just a reminder that this PR addresses #9953 and resolves a breaking behavior in React 17+. All checks are passing and CLA is signed. Kindly review when convenient — thanks!