Guard against assignments that are not ast.Name in docs parsing (#35513)

lib/ansible/parsing/metadata.py

@@ -191,7 +191,7 @@ def extract_metadata(module_ast=None, module_data=None, offsets=False):
     for root_idx, child in reversed(list(enumerate(module_ast.body))):
         if isinstance(child, ast.Assign):
             for target in child.targets:
-                if target.id == 'ANSIBLE_METADATA':
+                if isinstance(target, ast.Name) and target.id == 'ANSIBLE_METADATA':
                     metadata = ast.literal_eval(child.value)
                     if not offsets:
                         continue

test/sanity/validate-modules/main.py

@@ -753,6 +753,9 @@ class ModuleValidator(Validator):
         for child in self.ast.body:
             if isinstance(child, ast.Assign):
                 for grandchild in child.targets:
+                    if not isinstance(grandchild, ast.Name):
+                        continue
+
                     if grandchild.id == 'DOCUMENTATION':
                         docs['DOCUMENTATION']['value'] = child.value.s
                         docs['DOCUMENTATION']['lineno'] = child.lineno