Fix Table resize observer warning in React 16/17

[snowystinger]

Closes #1924
It's easier to test in Safari where you don't need to add the console log specified in the issue comment.

✅ 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:

Issue says to resize the window, but it's easier to resize the iframe by making the storybook left rail wider.

🧢 Your Project: