Collection of data issues we are fixing in Sourcify

I'm creating this issue to keep track of data issue we are fixing in the Soucify database. In the future, we might want to fix these problems also in the Verifier Alliance database. We should add any that come up here.

- https://github.com/ethereum/sourcify/issues/1990
- https://github.com/ethereum/sourcify/issues/2208
- https://github.com/ethereum/sourcify/issues/2227
- https://github.com/argotorg/sourcify/issues/2315
- https://github.com/argotorg/sourcify/issues/2028
- https://github.com/argotorg/sourcify/issues/2298
- https://github.com/argotorg/sourcify/issues/2602
- https://github.com/argotorg/sourcify/issues/2858

(I didn't add any that we fixed before pushing Sourcify's historical data (https://github.com/ethereum/sourcify/issues/2032))

Review the linked issues to understand each Sourcify database problem and check which items remain unresolved. Done means the listed data issues are addressed in Sourcify, with any applicable follow-up for the Verifier Alliance database identified.

Written by the indexing model from the issue text.