[native] Start forgotPasswordLinkOpacity at 0
[native] Start forgotPasswordLinkOpacity at 0

Summary: This Reanimated node only gets processed for the first time when `LogInPanel` displays, at which point the `targetForgotPasswordLinkOpacity` is already 1. We want it to start at 0 and animate to 1

Reviewers: palys-swm

Reviewed By: palys-swm

Subscribers: KatPo, zrebcu411, Adrian

Differential Revision: https://phabricator.ashoat.com/D51

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