Add labels field to EntityRegistryEntry

[jan-kuechler]

This one-line PR allows to read the entity labels via the entity registry.

See https://github.com/home-assistant/core/blob/902159387848e70ff93a0b99a09e3768c21bb1d3/homeassistant/helpers/entity_registry.py#L219 for the HomeAssistant model, which contains labels: set[str].

I did not need to update the tests, as the model creation is covered by test_entity_registry.py / test_list_entity_registry. The recorded cassettes contain the labels field in the HA response.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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[jan-kuechler]

The Coda Standards / Code Styling error seems to be unrelated:

Run uv run zuban check homeassistant_api
homeassistant_api/processing.py:120: error: Subclass of "str" and "bytes" cannot exist: have distinct disjoint bases [unreachable]
homeassistant_api/processing.py:121: error: Statement is unreachable [unreachable]
Found 2 errors in 1 file (checked 21 source files)
Error: Process completed with exit code 1.

I've only touched homeassistant_api/models/entity_registry.py