Small cleanup in async_process_ha_core_config

[emontnemery]

Proposed change

Very minor cleanup as suggested here: #23872 (comment)

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• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
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# Example configuration.yaml

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• This PR fixes or closes issue: fixes #
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[springstan]

Nice 👌