fix: remove ignored assignment

[YasharF]

The User schema doesn't define profile.email, so Mongoose ignores it in strict mode. The email field is populated at account creation (it is required), so this line is unnecessary.

Checklist

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Description

Screenshots of UI changes (browser) and logs/test results (console, terminal, shell, cmd)

[Copilot]

Pull request overview

Removes an ignored Mongoose assignment in the OAuth account-linking flow to avoid writing to an undefined User.profile.email field (which is discarded under strict schemas).

Changes:

• Remove user.profile.email assignment when linking an OAuth provider to an already-logged-in user.

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[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated no new comments.

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