Fix Internal Server Error in services w/o gateways (#2225) #243

Job	Run time
python-lint	17s
gateway-build	19s
frontend-build	1m 10s
runner-test	3m 45s
python-test (macos-latest, 3.9)	2m 56s
python-test (macos-latest, 3.10)	2m 33s
python-test (macos-latest, 3.11)	2m 20s
python-test (macos-latest, 3.12)	2m 34s
python-test (macos-latest, 3.13)	3m 1s
python-test (ubuntu-latest, 3.9)	4m 56s
python-test (ubuntu-latest, 3.10)	4m 56s
python-test (ubuntu-latest, 3.11)	4m 31s
python-test (ubuntu-latest, 3.12)	4m 53s
python-test (ubuntu-latest, 3.13)	4m 49s
python-test (windows-latest, 3.9)	3m 38s
python-test (windows-latest, 3.10)	3m 31s
python-test (windows-latest, 3.11)	4m 59s
python-test (windows-latest, 3.12)	4m 29s
python-test (windows-latest, 3.13)	6m 16s
runner-compile (linux, amd64, ubuntu-latest)	24s
runner-upload	18s
pypi-upload	29s
server-docker-upload	11m 54s
generate-json-schema	28s
update-get-dstack-tag	8s
	1h 19m 34s

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