fix(ept_level_sensor): revert to scale as per documented

The manufacturer cannot make consistent devices, some are per docs, others not.

Standardize on how it is documented.

Issue #5968

custom_components/tuya_local/devices/ept_level_sensor.yaml

@@ -28,7 +28,7 @@ entities:
         unit: m
         class: measurement
         mapping:
-          - scale: 1000
+          - scale: 100
   - entity: sensor
     name: Battery voltage
     class: voltage