PHP 8.2: fix deprecated creation of dynamic properties
Summary:
This change fixes a typo that, in PHP 8.2, causes this exception:
Creation of dynamic property PhabricatorAuthPasswordException::$confirmError is deprecated
Closes T15201
Test Plan: - I checked that "error" was spelled with two "r"
Reviewers: O1 Blessed Committers, avivey
Reviewed By: O1 Blessed Committers, avivey
Subscribers: speck, tobiaswiese, Matthew, Cigaryno
Maniphest Tasks: T15201
Differential Revision: https://we.phorge.it/D25100