* fix: xiaomi.derh.lite temperature precision
Add value-range step of 0.1 for dehumidifier temperature property to preserve decimal precision.
The xiaomi.derh.lite dehumidifier was reporting temperature as integer instead of float due to the default value-range step of 1. This fix changes the step to 0.1 to allow one decimal place precision (e.g., 22.5°C instead of 23°C).
Similar to the fix for cgllc.airm.cgd1st air monitor in commit 580ff87.
* chore: sort dehumidifier entry