Mark default user schema optional for when logged out #5416

Job	Run time
build-and-check	2m 36s
test-integration-packages/internal	38s
test-integration-sdk	42s
test-integration-packages/agent-runtime	47s
test-integration-common	40s
test-integration-cli	41s
test-integration-.agents	36s
test-integration-packages/billing	51s
test-cli	1m 8s
test-integration-web	43s
test-packages/billing	41s
test-common	36s
test-packages/agent-runtime	1m 3s
test-.agents	42s
test-web	43s
test-sdk	47s
test-packages/internal	55s
	14m 49s

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