Add ResizeObserver that observes targetRef (useOverlayPosition)

[sookmax]

Closes https://github.com/adobe/react-spectrum/issues/6383

✅ 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:

Story

• http://localhost:9003/?path=/story/react-aria-components--popover-trigger-observer-example

https://github.com/adobe/react-spectrum/assets/71210554/42ee2df1-ce76-4393-b159-0f13f3709520

🧢 Your Project:

[snowystinger]

GET_BUILD

[rspbot]

Build successful! 🎉

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

[rspbot]

## API Changes

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