ShareDocument Extension with Guest Users

When using the ShareDocument extension to share documents with email addresses, if the used target email address belongs to a user who is considered a "guest user" on Sharepoint, they get given direct access to the document instead of having to go through a share link like other email addresses that are not considered guests. This isn't a problem when you are only sharing a document with one person, but when you share a document with many, having to specify which link works for which person (direct link for guest users, share link for the rest) it can cause quite a bit of confusion.

I have been trying to fix this however I have made absolutely no progress. I thought it might have something to do with the ResolvePeoplePickerValueForEmailImplementation function and how the parameters are set there but nothing I change makes any difference.

Since I have been unable to figure out how to do this, I have come here. Is it possible to force emails to be shared through a Share Link with the ShareDocument extension instead of being given direct access?

Start by tracing the ShareDocument extension and the ResolvePeoplePickerValueForEmailImplementation entry point, then reproduce sharing with guest and non-guest email addresses. Determine whether the extension can force all recipients through a Share Link; done means guest recipients receive the same share-link behavior without breaking multi-recipient sharing.