Fix unhandled `KeyError` during Notion setup #184470

Job	Run time
Collect information & changes data	17s
Prepare dependencies (3.12)	11s
Prepare pre-commit base	16s
Check mypy	29s
Check all requirements	33s
Check pylint	25s
Check hassfest	44s
Split tests for full run	0s
Check other linters	26s
Check ruff-format	28s
Check ruff	25s
Run tests Python 3.12 (notion)	51s
Run tests Python ${{ matrix.python-version }} (${{ matrix.group }})	0s
Run ${{ matrix.postgresql-group }} tests Python ${{ matrix.python-version }}	0s
Run ${{ matrix.mariadb-group }} tests Python ${{ matrix.python-version }}	0s
Upload test coverage to Codecov (full suite)	0s
Upload test coverage to Codecov (partial suite)	15s
	5m 20s

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