Replace deprecated stacked `@classmethod` and `@property` (#79952)

changelogs/fragments/no-stacked-descriptors.yaml

@@ -0,0 +1,2 @@
+minor_changes:
+- Playbook objects - Replace deprecated stacked ``@classmethod`` and ``@property``

lib/ansible/playbook/base.py

@@ -70,16 +70,18 @@ def _validate_action_group_metadata(action, found_group_metadata, fq_group_name)
         display.warning(" ".join(metadata_warnings))
 
 
+class _ClassProperty:
+    def __set_name__(self, owner, name):
+        self.name = name
+
+    def __get__(self, obj, objtype=None):
+        return getattr(objtype, f'_{self.name}')()
+
+
 class FieldAttributeBase:
 
-    @classmethod  # type: ignore[misc]
-    @property
-    def fattributes(cls):
-        return cls._fattributes()
+    fattributes = _ClassProperty()
 
-    # mypy complains with "misc: Decorated property not supported"
-    # when @property and @cache are used together,
-    # split fattributes above into two methods
     @classmethod
     @cache
     def _fattributes(cls):