fix virtualizarr imports

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Fixes #1097

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📚 Documentation preview 📚: https://earthaccess--1098.org.readthedocs.build/en/1098/

[github-actions]

👈 Launch a binder notebook on this branch for commit 2240f13

I will automatically update this comment whenever this PR is modified

👈 Launch a binder notebook on this branch for commit 68b177a