Update AST if it is not made by PostCSS >= 8.4.41

Author: ai

lib/container.js

@@ -210,7 +210,7 @@ class Container extends Node {
 
     let processed = nodes.map(i => {
       /* c8 ignore next */
-      if (!i[my]) Container.rebuild(i)
+      if (!i[my] || !i.markClean) Container.rebuild(i)
       i = i.proxyOf
       if (i.parent) i.parent.removeChild(i)
       if (i[isClean]) markTreeDirty(i)