fix: TableView jump to top on asynchronous load

[obreitwi]

Closes #8132.

We confirmed that this PR resolves the issue internally, but I will provide a minimal example for easier verification.

✅ 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:

(will provide once minimal example is ready)

🧢 Your Project:

(not applicable)

[yihuiliao]

Thanks for the PR! You'll need to sign the CLA for all the checks to pass. If you could provide a minimal example (storybook) for easier verification that would be great. Otherwise, the changes make sense but we'll need to test.

[snowystinger]

Let us know if you cannot sign the CLA so we know what action to take. Thank you!

[obreitwi]

Hey, thank you for responding! I just signed the CLA (sorry for taking so long).

I am also a bit hard-pressed on time to provide a minimal solution, but the bug should become apparent whenever you use paged async loading on a table view and the individual rows are permitted to be of different heights (via overflowMode="wrap").

And just as a heads-up: We've noticed that while the original issue #8132 is indeed fixed, there are still occasional rendering issues where the table view does not get populated with all loaded rows at the bottom. A workaround for users is to scroll up and down a bit to trigger a re-render which typically fixes it.

An deeper investigation is pending on our side.