Add migration for old HomeWizard sensors

[DCSBL]

Proposed change

This migrates total_power_*_t1_kwh to total_power_*_kwh, when total_power_*_kwh does not exists. This solves an issue where users can't access long-term storage data for the HomeWizard Energy Socket.

The problem;

• The Energy Socket did not have a total_power_*_kwh sensor, only a total_power_*_t1_kwh sensor. The total_power_*_kwh has been added.
• Later, we removed duplicate sensors when no more than one tariff sensor was exposed.
• Effectively, this removed a sensor and added a new one while loosing data.

This does not fix the issue when the user already has installed 2023.12, because the new sensor is already created. The data is not lost, but can't be accessed. We have to find another solution for that.

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)
• Deprecation (breaking change to happen in the future)
• 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 HomeWizard and 2023.12 #105242
• This PR is related to issue:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist
• I have followed the perfect PR recommendations
• The code has been formatted using Ruff (ruff format homeassistant tests)
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
• For the updated dependencies - a link to the changelog, or at minimum a diff between library versions is added to the PR description.
• Untested files have been added to .coveragerc.

To help with the load of incoming pull requests:

• I have reviewed two other open pull requests in this repository.

[DCSBL]

Changes by @frenck approved 👍. Thanks!

[frenck]

Thanks, @DCSBL 👍

../Frenck