fix: quoting a tweet from a private account generates a quote link with the twitter source handle instead of skipping

[louisgrasset]

Current behavior:
This tweet is quoting this one.

Quoted tweet is no more available, making the crossposted post to contains a quotation url with the content source handle on mastodon.

Crossposted content:
mastodon: https://mastodon.social/@louisgrasset/111273961676998942
bluesky: https://bsky.app/profile/louisgrasset.bsky.social/post/3kcbm5du73t2s

Expected behavior:
Having the tweet detected as non eligible since it's not a self-quote

[louisgrasset]

Will have to investigate more to scope the issue