Different scaling on HiDPI monitor - eviltoast

When connecting the Steam Deck to a HiDPI monitor, I would like to have the scaling set to 150%. However, this scaling does also apply to the Steam Deck.

Is there a way to decouple the two scaling percentages in order to have 100% on the Steam Deck’s screen and 150% on the HiDPI monitor? Thanks.

Edit: Talking about desktop mode.