Use identifier for the name of the D-Bus error #2219

Job	Run time
check-typos	1m 13s
python-checks (bandit libatomic monkeytype pylint python3-dateutil python3-dbus-client-gen python...	49s
test-runs (3.13)	14m 6s
python-checks (black python3-isort, PATH=${PATH}:/github/home/.local/bin PYTHONPATH=./src make -f...	26s
test-runs (3.12)	13m 59s
coverage-runs	24m 21s
	54m 54s

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