I just purchased a power strip from Amazon, it included a comment from a purchaser that it worked with HE, albeit with a process using this driver swap over described.
Here is a link to what I purchased https://www.amazon.co.uk/dp/B09JWP6TJG?psc=1&ref=ppx_yo2ov_dt_b_product_details
I tried the Generic Zigbee Multi Endpoint Switch and the Tuya Zigbee Metering Plug driver, selecting Device between them and clearing states.
It would pair with a C8 but not a C7
Nothing seemed to work despite trying lots of different combinations
Just as I was about to give up I saw a comment that someone had chosen the option when pairing to
This worked immediately on the C8 and I am able to use all the different plug sockets independently through child devices
