Add vacuum activity to pylint type hints check

pylint/plugins/hass_enforce_type_hints.py

@@ -2795,6 +2795,10 @@ _INHERITANCE_MATCH: dict[str, list[ClassTypeHintMatch]] = {
                     function_name="state",
                     return_type=["str", None],
                 ),
+                TypeHintMatch(
+                    function_name="activity",
+                    return_type=["VacuumActivity", None],
+                ),
                 TypeHintMatch(
                     function_name="battery_level",
                     return_type=["int", None],

tests/pylint/test_enforce_type_hints.py

@@ -1167,6 +1167,10 @@ def test_vacuum_entity(linter: UnittestLinter, type_hint_checker: BaseChecker) -
     class MyVacuum( #@
         StateVacuumEntity
     ):
+        @property
+        def activity(self) -> VacuumActivity | None:
+            pass
+
         def send_command(
             self,
             command: str,