fix: Correctly set note visibility when importing from mastodon

Created by: alicem

Home == followers url in to and public in cc, so if we treat all notes with followers in cc as unlisted, we miss all of them.

What

Why

Additional info (optional)

Checklist

• Read the contribution guide
• Test working in a local environment
• (If needed) Add story of storybook
• (If needed) Update CHANGELOG.md
• (If possible) Add tests