Fix missing if statement in homematic (#114832) #2

Job	Run time
Collect information & changes data	17s
Prepare pre-commit base	56s
Prepare dependencies (3.12)	5m 29s
Check other linters	1m 7s
Check ruff-format	19s
Check ruff	29s
Check hassfest	41s
Check mypy	3m 24s
Check all requirements	23s
Split tests for full run	0s
Check pylint	8m 56s
Run tests Python ${{ matrix.python-version }} (${{ matrix.group }})	0s
Run tests Python ${{ matrix.python-version }} (${{ matrix.group }})	0s
Run ${{ matrix.mariadb-group }} tests Python ${{ matrix.python-version }}	0s
Run ${{ matrix.postgresql-group }} tests Python ${{ matrix.python-version }}	0s
Upload test coverage to Codecov (partial suite)	0s
Upload test coverage to Codecov (full suite)	0s
	22m 1s

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