virtualizer is not working on Strict mode

[digvijoymohapatra11]

We are using @react-aria/virtualizer@3.5.0. virtualizer is working fine in normal mode but in strict mode it is always blank.
Please refer the below sandbox for the reference.
https://codesandbox.io/s/listbox-example-react-spectrum-forked-5zwt8i?file=/Example.js

[reidbarber]

We don't fully support React Strict Mode yet, however work is in progress. I'll close this in favor of the umbrella issue for strict mode issues at #779