goBackToEmail method
void
goBackToEmail()
Return to the email-input step. Cancels the resend cooldown, clears any displayed error, and preserves submittedEmail / emailId in case the consumer wants to re-use them (e.g. for a "wrong email" confirmation dialog).
Implementation
void goBackToEmail() {
_cooldownTimer?.cancel();
_cooldownTimer = null;
_cooldownRemaining = 0;
_step = CrossmintEmailSignInStep.emailInput;
_error = null;
_safeNotify();
}