sdk: fail fast when spawn manager is disabled #212

Job	Run time
Storage Tests (Node 18 \| macos-latest)	2m 55s
Storage Tests (Node 22 \| macos-latest)	1m 50s
Storage Tests (Node 20 \| ubuntu-latest)	1m 54s
Storage Tests (Node 18 \| ubuntu-latest)	5m 22s
Storage Tests (Node 22 \| ubuntu-latest)	1m 47s
Coverage (upload)	31s
Storage Tests (Node 20 \| macos-latest)	1m 45s
	16m 4s

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