Improve code reviewer multi-prompt #5471

Job	Run time
build-and-check	2m 36s
test-integration-packages/agent-runtime	46s
test-integration-packages/internal	41s
test-integration-cli	38s
test-integration-packages/billing	39s
test-packages/agent-runtime	1m 4s
test-integration-common	40s
test-packages/internal	54s
test-sdk	43s
test-cli	1m 12s
test-integration-.agents	38s
test-web	45s
test-integration-sdk	38s
test-.agents	41s
test-packages/billing	38s
test-common	39s
test-integration-web	45s
	14m 37s

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