Poolex Ice Spa: rename attribute to avoid misreported error

ipm_temperature is close enough to min/max_temperature that the yaml tests
flag it as a possible typo.

Abbreviate it to ipm_temp to avoid that.

custom_components/tuya_local/devices/poolex_icespa70_heatpump.yaml

@@ -113,7 +113,7 @@ primary_entity:
     - id: 137
       type: integer
       optional: true
-      name: ipm_temperature
+      name: ipm_temp
       mapping:
         - scale: 100
     - id: 138