With the switch from 8.1.5 to 8.2, Model_Reset was moved to ModelFrameMixin and renamed ResetModel. The inventory page model inherits from ModelWithControlsTemplate, which seems to inherit from this mixin, but the inspection model is a PlayerModel without other inheritance and does not have this mixin applied, so we need to apply it to be able to call the function.
With the switch from 8.1.5 to 8.2, Model_Reset was moved to ModelFrameMixin and renamed ResetModel. The inventory page model inherits from ModelWithControlsTemplate, which seems to inherit from this mixin, but the inspection model is a PlayerModel without other inheritance and does not have this mixin applied, so we need to apply it to be able to call the function.