Integration Sensor unit of measurement overwrite

[dgomes]

Breaking change

Proposed change

Integration Sensor would overwrite configuration unit_of_measurement with state restore unit_of_measurement Fixes #55802

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes Converting “W” to “kWh” with Integration platform - ERROR object has no attribute ‘__unit_template’ #55802
• This PR is related to issue:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
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• I have followed the development checklist
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• Tests have been added to verify that the new code works.

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[emontnemery]

looks good, can the wanted behavior be covered by a test though?