Summary:
Phutil is not yet loaded during preamble, so we can't use it.
This change fixes a regression introduced here, fixing PHP 8.1 support:
{96ae4ba13acbf0e2f8932e950a92af0495f034d7}
Ref T15064
Test Plan: Included test script.
Reviewers: O1 Blessed Committers, valerio.bozzolan
Reviewed By: O1 Blessed Committers, valerio.bozzolan
Subscribers: speck, tobiaswiese, valerio.bozzolan, Matthew, Cigaryno
Maniphest Tasks: T15064
Differential Revision: https://we.phorge.it/D25114
