[Python] Double conversion of level data in state property

[magoorden]

To retreive the water levels of a state using it's property, a double conversion is happening, such that the returned value represents the sensor distance and not the water level.

For example

class ClaireState:
    [...]
    @property
    def tube1_level(self) -> Optional[float]:
        return self.convert_distance_to_level(self.Tube1_sonar_dist_mm)

where self.Tube1_sonar_dist_mm is already a converted value.

One could also argue that when the sensor data is fetched by update_state(), no conversion should be performed, as the data currently written into self.Tube1_sonar_dist_mm does not match what the property name suggests.

[magoorden]

I decided to remove the conversion when the a new state information is retreived. In that way, the property names in the ClaireState correspond to the stored value.