Fix initialization of some `denonavr` receivers when telnet API is enabled #217183

Job	Run time
Collect information & changes data	13s
Prepare dependencies (3.12)	20s
Prepare pre-commit base	20s
Check Dockerfile	12s
Check Dockerfile.dev	12s
Check script/hassfest/docker/Dockerfile	15s
Check pylint	33s
Check hassfest	55s
Check all requirements	23s
Audit licenses	0s
Check mypy	38s
Check pylint on tests	32s
Split tests for full run Python ${{ matrix.python-version }}	0s
Check ruff	26s
Check ruff-format	19s
Check other linters	41s
Run tests Python 3.12 (denonavr)	1m 6s
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)	18s
	7m 23s

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