[babel-plugin] TypeScript types are wrong

### Describe the issue

The resolved types use `export default` where the JavaScript file appears to use `module.exports =`. This will cause TypeScript under the `node16` module mode to think an extra `.default` property access is required, but that will likely fail at runtime.

### Expected behavior

These types should use `export =` instead of `export default`.

### Steps to reproduce

See https://arethetypeswrong.github.io/?p=%40stylexjs%2Fbabel-plugin%400.10.1

### Test case

_No response_

### Additional comments

_No response_