Fix Table warning in NextJS

[snowystinger]

Closes #5499

This would probably have been found by TS Strictmode when we turned it on for this file. I verified this in
https://stackblitz.com/edit/stackblitz-starters-sjybxv it was just a random stackblitz I found with nextjs. All that mattered was that the warning appeared, not how pretty it was. It could probably be verified in our examples too.

✅ Pull Request Checklist:

• Included link to corresponding React Spectrum GitHub Issue.
• Added/updated unit tests and storybook for this change (for new code or code which already has tests).
• 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:

🧢 Your Project:

[rspbot]

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[LFDanLu]

this is probably fine, but I don't think we have a RAC table w/ column resizing in the test NextJS app

[snowystinger]

this is probably fine, but I don't think we have a RAC table w/ column resizing in the test NextJS app

Yeah, our next apps are all react-spectrum at the moment and this change seems quite small and innocuous. I tested it using the stackblitz I mentioned earlier, and I'm pretty confident it'd have been caught by TS strict

[rspbot]

Build successful! 🎉

• View the storybook
• View the storybook-17
• View the storybook-16
• View the documentation

[rspbot]

Build successful! 🎉

• View the storybook
• View the storybook-17
• View the storybook-16
• View the documentation

[rspbot]

## API Changes

unknown top level export { type: 'any' }
unknown top level export { type: 'any' }
unknown top level export { type: 'any' }
unknown top level export { type: 'any' }
unknown top level export { type: 'any', access: 'private' }
unknown top level export { type: 'any', access: 'private' }
unknown top level export { type: 'any' }
unknown top level export { type: 'any' }
unknown top level export { type: 'any' }
unknown top level export { type: 'any' }
unknown top level export { type: 'identifier', name: 'Column' }
unknown top level export { type: 'identifier', name: 'Column' }
unknown type { type: 'link' }
unknown type { type: 'link' }
unknown type { type: 'link' }
unknown type { type: 'link' }
unknown type { type: 'link' }
unknown type { type: 'link' }
unknown top level export { type: 'any' }
unknown top level export { type: 'any' }
unknown top level export { type: 'any' }
unknown top level export { type: 'any' }
unknown top level export { type: 'any' }
unknown top level export { type: 'any' }