[hue] LK Dimmer cannot be turned off with API v2

[jlaur]

The implementation of Hue API v2 unfortunately reintroduces the issue described in #11571.

As a consequence, LK Dimmers cannot be turned off.

This is caused by a firmware bug in the product, but previously there was a work-around in place to support that product.

Regression of #13570

Expected Behavior

The dimmer should be able to turn off when receiving an OFF command.

Current Behavior

When sending the OFF command, the product will dim to the lowest level (which is not very low).

2023-07-27 23:59:02.792 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'DinnerTableLamps_Brightness' received command OFF
2023-07-27 23:59:02.794 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'DinnerTableLamps_Brightness' predicted to become OFF
2023-07-27 23:59:02.798 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item 'DinnerTableLamps_Brightness' changed from 100 to 0
2023-07-27 23:59:28.986 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'DinnerTableLamps_Brightness' received command ON
2023-07-27 23:59:28.988 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'DinnerTableLamps_Brightness' predicted to become ON
2023-07-27 23:59:28.994 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item 'DinnerTableLamps_Brightness' changed from 0 to 100
2023-07-27 23:59:29.099 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item 'DinnerTableLamps_Brightness' changed from 100 to 0.3900

Possible Solution

Reintroduce the work-around provided in #11572.

Steps to Reproduce

Send OFF command to item linked to brightness or on-off-only channel.

Context

Since this is not "just" a bulb but an expensive in-wall dimmer, it's worth the effort to support it when this is actually possible with little effort.

Your Environment

• Version used: 4.0