Move mjtConstraintState from mjmodel.h to mjdata.h.

This is the correct location, this enum is only used in `mjData`, not `mjModel`.

PiperOrigin-RevId: 798860951
Change-Id: I48b9a2afc831bd9a6966cc9586429fd03605bdd2

python/mujoco/introspect/enums.py

@@ -327,18 +327,6 @@ ENUMS: Mapping[str, EnumDecl] = dict([
              ('mjCNSTR_CONTACT_ELLIPTIC', 7),
          ]),
      )),
-    ('mjtConstraintState',
-     EnumDecl(
-         name='mjtConstraintState',
-         declname='enum mjtConstraintState_',
-         values=dict([
-             ('mjCNSTRSTATE_SATISFIED', 0),
-             ('mjCNSTRSTATE_QUADRATIC', 1),
-             ('mjCNSTRSTATE_LINEARNEG', 2),
-             ('mjCNSTRSTATE_LINEARPOS', 3),
-             ('mjCNSTRSTATE_CONE', 4),
-         ]),
-     )),
     ('mjtSensor',
      EnumDecl(
          name='mjtSensor',
@@ -513,6 +501,18 @@ ENUMS: Mapping[str, EnumDecl] = dict([
              ('mjSTATE_INTEGRATION', 8191),
          ]),
      )),
+    ('mjtConstraintState',
+     EnumDecl(
+         name='mjtConstraintState',
+         declname='enum mjtConstraintState_',
+         values=dict([
+             ('mjCNSTRSTATE_SATISFIED', 0),
+             ('mjCNSTRSTATE_QUADRATIC', 1),
+             ('mjCNSTRSTATE_LINEARNEG', 2),
+             ('mjCNSTRSTATE_LINEARPOS', 3),
+             ('mjCNSTRSTATE_CONE', 4),
+         ]),
+     )),
     ('mjtWarning',
      EnumDecl(
          name='mjtWarning',