The only Victorian novel I know of ....
with an alternate ending is Dickens' Great Expectations. Dickens first ending had Pip and Estella parting, but at his publisher's urging, he rewrote the ending with the two ending up together. My copy of Great Expectations has the original ending. Even the great David Lean movie has Dickens' happy ending.
I'm glad Tess ended as it did. Of course a few years after Hardy, England would repeal capital punishment. Recently, Australia gave a purported American wife murderer 18 mos. in prison. He was extradited to the US to stand trial, but the US had to promise he would not be tried for a capital crime. And Scotland's release of the Lockerbee (sp?) airplane bomber was really nice of them. Kill over 200 people and only serve a few months. I'm glad we are civilized in the US and still give murderers the death cocktail.