dirstate: drop the last explicit `state` usage in the module
The internal detail of the state bytes is not longer exposed to the dirstate
layer.
Differential Revision: https://phab.mercurial-scm.org/D10977
This instance will be upgraded to Heptapod 18.5.1 on 2025-11-13 between 17:00 and 18:00 UTC+2
The internal detail of the state bytes is not longer exposed to the dirstate
layer.
Differential Revision: https://phab.mercurial-scm.org/D10977