Enable HomeWizard Battery group mode by default when device controls batteries

[DCSBL]

Proposed change

Battery group mode was always disabled by default, but with this PR we enable it by default when the P1 Meter / kWh Meter has control over batteries.

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 #
• This PR is related to issue:
• Link to documentation pull request: Update HomeWizard Battery group mode entity information home-assistant.io#42665
• Link to developer documentation pull request:
• Link to frontend pull request:

Checklist

• I understand the code I am submitting and can explain how it works.
• 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.
• Any generated code has been carefully reviewed for correctness and compliance with project standards.

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.

To help with the load of incoming pull requests:

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

[Copilot]

Pull request overview

This PR modifies the HomeWizard integration to enable the battery group mode select entity by default when the device has control over batteries (battery_count > 0), rather than always having it disabled by default. This improves user experience by making the battery control feature more discoverable for users with battery systems.

Key changes:

• Dynamic entity enablement based on battery_count in the device data
• Updated tests to verify the new default behavior for devices with and without batteries
• Added new test fixture for P1 device without batteries to test disabled-by-default scenario

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
homeassistant/components/homewizard/select.py	Added logic to check battery_count and set entity_registry_enabled_default dynamically based on whether device controls batteries
tests/components/homewizard/test_select.py	Removed entity_registry_enabled_by_default fixture from tests since entity is now enabled by default for devices with batteries; added new test for disabled-by-default behavior with HWE-P1-no-batteries fixture
tests/components/homewizard/fixtures/HWE-P1-no-batteries/device.json	New test fixture for P1 device without batteries
tests/components/homewizard/fixtures/HWE-P1-no-batteries/data.json	New test fixture with complete P1 meter data
tests/components/homewizard/fixtures/HWE-P1-no-batteries/batteries.json	New test fixture with battery_count=0 to represent device without battery control
tests/components/homewizard/fixtures/HWE-P1-no-batteries/system.json	New test fixture with system configuration