[3.12] GH-89727: Fix shutil.rmtree() recursion error on deep trees (GH-119808)
          #119919
        
          
      
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Implement
shutil._rmtree_safe_fd()using a list as a stack to avoid emitting recursion errors on deeply nested trees.shutil._rmtree_unsafe()was fixed in a150679.(cherry picked from commit 53b1981)