fix backend tests #3891

Job	Run time
build-and-check	2m 33s
test-integration-cli	31s
test-cli	32s
test-integration-npm-app	32s
test-integration-packages/agent-runtime	34s
test-integration-web	33s
test-.agents	35s
test-integration-.agents	40s
test-integration-common	32s
test-integration-backend	35s
test-common	38s
test-packages/agent-runtime	35s
test-backend	47s
test-npm-app	40s
test-web	33s
	10m 50s

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