Also clean template data even if marked unsafe

Fixes #20568

(cherry picked from commit 86beb55a90)

lib/ansible/template/__init__.py

@@ -274,7 +274,7 @@ class Templar:
     def _clean_data(self, orig_data):
         ''' remove jinja2 template tags from a string '''
 
-        if not isinstance(orig_data, string_types) or hasattr(orig_data, '__UNSAFE__'):
+        if not isinstance(orig_data, string_types):
             return orig_data
 
         with contextlib.closing(StringIO(orig_data)) as data:
@@ -383,6 +383,7 @@ class Templar:
                             overrides=overrides,
                             disable_lookups=disable_lookups,
                         )
+
                         unsafe = hasattr(result, '__UNSAFE__')
                         if convert_data and not self._no_type_regex.match(variable):
                             # if this looks like a dictionary or list, convert it to such using the safe_eval method