core: Starline: "hand break" sensor is always OFF

The problem

Although web-accessed Starline service reports “tighten” / “released”, the corresponding binary_sensor is always OFF.

What version of Home Assistant Core has the issue?

2023.5.0

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant Container

Integration causing the issue

Starline

Link to integration documentation on our website

https://www.home-assistant.io/integrations/starline/

Diagnostics information

No response

Example YAML snippet

No response

Anything in the logs that might be useful for us?

No response

Additional information

No response