Fix typecheck and pre-existing test failures #6372

Job	Run time
build-and-check	3m 9s
test-integration-packages/internal	1m 14s
test-integration-cli	45s
test-integration-sdk	1m 17s
test-integration-common	43s
test-integration-packages/agent-runtime	50s
test-integration-web	45s
test-packages/agent-runtime	45s
test-integration-packages/billing	1m 2s
test-cli	1m 2s
test-packages/billing	53s
test-sdk	54s
test-common	39s
test-packages/internal	55s
test-.agents	45s
test-web	1m 15s
	16m 53s

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