Unify device_state_attributes handling for Homematic IP Cloud

[SukramJ]

Breaking Change:

The naming of entity attributes has been corrected (missing underscore) to follow the standards:

• moisture detected --> moisture_detected
• motion detected --> motion_detected
• power mains failure --> power_mains_failure
• presence detected --> presence_detected
• smoke detector alarm --> smoke_detector_alarm
• water level detected --> water_level_detected
• window state --> window_state

Description:

PR #26103 changed the handling of device_state_attributes for devices.
This PR

• uses the same simplifications for groups
• unifies the handling with evice_state_attributes
• remove checks for sabotage

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist

[SukramJ]

Hi @MartinHjelmare, please have a look at this PR.
Thanks.

[MartinHjelmare]

Can be merged when a breaking change paragraph is added to the PR description.

[SukramJ]

Thanks a lot @MartinHjelmare,
the breaking change paragraph is added.