Relay channel with Curtain control not exported to Google Home

[QB4-dev]

Description

When I set SUPLA_CHANNELTYPE_RELAY with SUPLA_CHANNELFNC_CURTAIN function it doesn't appear in Google Home, when for example same channel with SUPLA_CHANNELFNC_CONTROLLINGTHEROLLERSHUTTER is visible in Google Home correctly

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Where does this happen?

• Official SUPLA Cloud (cloud.supla.org)
• Self-hosted instance

If self-hosted, please provide server related information.
Cloud version: ... (take it from web page footer)

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Steps to reproduce

1. Go to SUPLA Cloud
2. Set SUPLA_CHANNELFNC_CURTAIN for relay channel
3. Check Google Home

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Expected behavior

Curtain channel visible in Google Home like via original Tuya Smart integration

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Actual behavior

Curtain channel not visible in Google Home

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Additional information (optional)

https://forum.supla.org/viewtopic.php?t=17413

[QB4-dev]

Same for:

#define SUPLA_CHANNELFNC_TERRACE_AWNING 910                // ver. >= 24
#define SUPLA_CHANNELFNC_PROJECTOR_SCREEN 920              // ver. >= 24

Not visible in Google Home