Bump `@swc/helpers` in`@react-stately/flags` to match other packages

[wojtekmaj]

Closes #6378

✅ Pull Request Checklist:

• [x] Included link to corresponding React Spectrum GitHub Issue.
• [x] Added/updated unit tests and storybook for this change (for new code or code which already has tests).
• [x] Filled out test instructions.
• [ ] Updated documentation (if it already exists for this component).
• [ ] Looked at the Accessibility Practices for this feature - Aria Practices

📝 Test Instructions:

• Build the package
• Examine built source files and confirm there are no @swc/helpers imports in neither of the outputted files

🧢 Your Project:

[snowystinger]

Thanks for the PR, this should just be updated to the same range as all our other packages. There's no easy way to tell if we need swc/helpers for a particular package, so it's a dependency of all of them. Whether or not the dep is actually needed can change based on updates parcel/swc/browserslist/etc