Page revisions are missing information about author

see MR comment

I am still getting the anonymous if I don't change the title. Also I do think we want

$use_existing_revision_id = AutoSaveManager::contentEntityIsConsideredNew($original_entity);

Because otherwise if you first create a page that hasn't been published and change the title it will never be considered new which I don't think is the intention

and that would leave the first revision showing as anonymous, which I don't think is the intention.

I think I found a bug that is 0.x and this branch.

$use_existing_revision_id = AutoSaveManager::contentEntityIsConsideredNew($entity);

        if ($entity instanceof EntityPublishedInterface) {
          $entity->setPublished();
        }
        // If the entity is new, the autosaved data is considered to be part
        // of the first revision. Therefore, do not create a new revision
        // for new entities.
        if ($use_existing_revision_id) {
          $entity->setNewRevision(FALSE);
        }

Even if $use_existing_revision_id === true a new revision is always created.

I think the intention of this code, from reading the comment, is that if you

1. create a new page inside XB
2. make some changes to the page
3. publish the page
4. There should be only 1 revision in the log after publishing

The last item does not work. there are always 2 items. Presumably for every XB page there will always be the same first revision with the same data, excepted for created and changed timestamps, because no changes have been made for this revision.

I am not sure why this happens

This relates to this issue because that first revision will always show as "anonymous"

But that might be a bigger problem that we could fix in a follow-up. If someone one knows why this is happening it and it is a small fix it might make sense to fix it here

re #8 I created #3535515: New XB pages also create a new revision on publish even though they are intended not to. I didn't add a todo in this issue's MR because I don't think we would change what we are doing here

I've tested it in this branch and in 0.x. In 0.x can reproduce the issue but in this branch the user is there. Even I created a new Content Editor user (nacho) with the right permissions and works well.

The code looks good to me too, so I think it's RTBC.

Tested following scenarios and changes are working as expected :