R1:61b178f44e48

Use PhutilInvalidStateException

Summary: Use `PhutilInvalidStateException`. Depends on D12803.

Test Plan: Unit tests pass.

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D12829