actingAs()/Livewire::actingAs() call Auth::shouldUse(), which made every
existing test for this trait pass identically whether confirmPassword() asked
for the right guard explicitly or just read whichever guard happened to be
default — reverting the explicit guard() call to a bare auth()->user() passed
the full suite. This test signs the operator in without actingAs and
deliberately decouples the ambient default guard from their session before
calling confirmPassword(), so only the explicit resolution can succeed.
nexxo