Simplify ad response shape (#562) #6295

Job	Run time
build-and-check	3m 9s
test-integration-packages/internal	1m 7s
test-integration-packages/billing	1m 3s
test-integration-cli	45s
test-integration-web	38s
test-integration-common	49s
test-integration-sdk	1m 23s
test-integration-packages/agent-runtime	41s
test-sdk	43s
test-web	59s
test-.agents	50s
test-packages/billing	44s
test-common	44s
test-cli	56s
test-packages/internal	1m 1s
test-packages/agent-runtime	50s
	16m 22s

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