Disabling Modern Standby does not work with Windows 10 latest build (2004)

The previous solution to turning off the (dubious) "Modern Standby" feature, editing registry as per:

https://www.dell.com/community/XPS/XPS-13-9350-overheat-when-left-to-sleep-and-drains-battery/m-p/7338057#M31497

no longer works with latest Windows (which we need to have for WSL 2 to work).