Pull Request Overview

This PR implements logic to restore providers' social IDs during account migration, adding support for GitHub and OpenID Connect (OIDC) authentication providers alongside email-based authentication.

• Refactors the migrateAccount function to handle multiple social ID types (GitHub, OIDC, email)
• Adds logic to create both primary and secondary social ID entries when applicable
• Implements conditional secondary key creation to avoid duplicate email entries for provider-specific accounts

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