This patch resolves another issue where saving author meta data could cause an error.

Detailed log

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> No GitHub issues were closed.

For everyone

• Fixed: Resolved a fatal error after saving a user profile containing custom TSF metadata (such as a Facebook profile link or X handle).
  • If you saved your author profile with 5.1.1 active or changed the counter type, you must repopulate these fields. Since the bug was so short-lived and practically an edge-case, we expect no issue here. Also, no social network actually uses these handles.