feat: Unintentional condition removed for AbortController setup

[aarne]

Small logic fix and one small typo

[dagnelies]

Well, it's not really a logic mistake since this AbortController is only needed for the autocomplete / conditional-ui which is running in the background. For the normal authenticate/register "prompt", the function returns as soon as the user confirms or cancels the modal dialog. But well, always adding the AbortController should do no harm either.