AFAIK that will only work in the "main branch", so to speak, not in the nested subfolders.
This script can handle that and a bit more, although it's very niche.
ExpandFolders EXPAND=top to expand one level selected or all folders (if nothing is selected).
ExpandFolders ALL EXPAND=top to always expand ALL one level.
FWIW, you can also define how many levels (read the script's main post)
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