Deprecation Warning (2026.1) - Setting state directly

[deosrc]

HA 2025.1 is showing a deprecation warning:

Detected that custom integration 'robovac' is setting state directly. Entity None (<class 'custom_components.robovac.vacuum.RoboVacEntity'>) should implement the 'activity' property and return its state using the VacuumActivity enum at custom_components/robovac/vacuum.py, line 118: async_add_entities([entity]). This will stop working in Home Assistant 2026.1, please create a bug report at https://github.com/codefoodpixels/robovac/issues