Provides some compatibility for PHP8.1.
@justinvelluppillai there's now a screenshot test failing eg https://builds-artifacts.matomo.org/matomo-org/matomo/4.x-dev/48388/Installation_system_check.png which is maybe not expected? Eg it is showing now
0 and it looks like someone configured
0 when nothing is configured
Thanks - fixed now. It was actually the other way around, my change was stripping values that were previously shown.