A simple relay node HUE does not provide, so looking for another solution.

Very expensive and needs its own controller.
The relay can be controlled by Apple HomeKit.
HomeKit integration: Bosch App → Partner
Connectivity: ZigBee
Needs:

1. Smart Home Controller
2. Relay (Big sized compared with alternatives.)
3. Bosch App

Inexpensive and needs no dedicated controller.
The relay can be controlled by Apple HomeKit.
HomeKit integration: SwitchBot App → Matter
Connectivity: WiFi
Needs:

1. Relay 1PM
2. SwitchBot App

Inexpensive and needs no dedicated controller.
The relay can be controlled by Apple HomeKit.
HomeKit integration: Browser → Matter
Connectivity: WiFi
Needs:

1. Relay Shelly 1 Mini
2. Browser

Links:

• https://smartapfel.de/shelly-homekit-ota-installieren/

Does not provide a relay but only a battery solution which works with HUE lights only.

• HUE light is continues connected with the 230V
• The wall switch is connected with the battery powered HUE switch.