rename part_state_api to mutation_api

Author: LKasianAnsys

src/ansys/visor/viewer/app/trame/local_app.py

@@ -562,7 +562,7 @@ def sync_cross_section_plane(self, payload) -> None:
         re-serialises them in one critical section; nothing is pushed from
         here.
         """
-        api = self._part_state_api("sync_cross_section_plane", payload)
+        api = self._mutation_api("sync_cross_section_plane", payload)
         if api is None:
             return
         api.sync_cross_section_plane(payload.origin, payload.normal)

tests/unit/app/test_local_app_sync_cross_section_plane.py

@@ -9,7 +9,7 @@
 there would multiply the per-part tests by one more and rewrite them.
 
 Two tests, not six.  The no-coordinator path and the not-a-mapping path run
-through ``_part_state_api`` and ``parse_payload``, which three sibling trigger
+through ``_mutation_api`` and ``parse_payload``, which three sibling trigger
 modules already pin against the same two functions; repeating them here would
 be a third and fourth copy of one failure mode rather than a new one.  What is
 unique to this trigger is that it forwards *two* vectors in a fixed order, and