--skip-idsites argument to core:archive works like --force-idsites in 4.x #17074

When specifying --skip-idsites in a CLI call to core:archive, it will actually process only these sites instead of skipping them.

The current implementation looks like this:

if (!empty($this->shouldSkipSpecifiedSites)) {
    $websiteIds = array_intersect($websiteIds, $this->shouldSkipSpecifiedSites);
}

I guess it should use array_diff instead of array_intersect.

Thanks for finding this regression @Callidior 👍 Very appreciated