Please describe the feature you'd like to see added.

loadtxoutset should return (more of) the errors that currently only appear in the log.

Is your feature related to a problem, if so please describe it.

Currently most errors encountered during loadtxoutset can only be found via the log.

Describe the solution you'd like

No response

Describe any alternatives you've considered

No response

Please leave any additional context

Errors could be shown by loadtxoutset status if the method is made async (see #28620), otherwise just returned.