I might be mistaken but, I believe that unlike the wireless H1 switch, the wired H1 EU switch only supports single press. The long press on the H1 EU wired switches is used to delete pairing (from Aqara hub) and initiate pairing mode.
Smart Wall Switch H1 EU (No Neutral) - User manual - Aqara
EDIT: I found the article linked below, about the wireless switch and had a nose at the “Manage Zigbee Device” dialog for my H1 EU and it didn’t appear to offer a “click_mode” attribute.
Aqara H1 remote switch with Home Assistant - how to enable double/long clicks » The smarthome journey