Adapt teslemetry to new device registry API

[emontnemery]

Proposed change

Adapt teslemetry to new device registry API

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:
• 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.
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• 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.
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  Updated by running python3 -m script.gen_requirements_all.
• For the updated dependencies a diff between library versions and ideally a link to the changelog/release notes is added to the PR description.

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

[home-assistant]

Hey there @Bre77, mind taking a look at this pull request as it has been labeled with an integration (teslemetry) you are listed as a code owner for? Thanks!

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[Copilot]

Pull request overview

Updates Teslemetry for config-entry-scoped device registry lookups.

Changes:

• Passes config entry IDs through firmware update listeners.
• Uses async_get_device_by_identifier to avoid ambiguous device lookups.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
homeassistant/components/teslemetry/helpers.py	Scopes device lookup to its config entry.
homeassistant/components/teslemetry/__init__.py	Propagates config entry IDs to version listeners.