Bugfix: avoid 500 when resending confirmation

What does this MR do?

The resource argument in the after_resending_confirmation_instructions_path_for method is actuall a symbol, not a user object. Avoiding calling methods on this argument when redirecting to the almost_there path

note: the almost_there page renders gracefully without an email param.

part of: #333693 (closed) (comment 602683385)

Screenshots (strongly suggested)

Does this MR meet the acceptance criteria?

Conformity

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Security

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