Tweak to model selection design #6457

Job	Run time
build-and-check	2m 58s
test-integration-packages/billing	59s
test-integration-packages/internal	1m 15s
test-integration-web	52s
test-integration-packages/agent-runtime	52s
test-integration-cli	50s
test-integration-sdk	1m 24s
test-integration-common	43s
test-cli	49s
test-packages/internal	1m 3s
test-packages/billing	53s
test-packages/agent-runtime	44s
test-common	45s
test-web	1m 13s
test-.agents	43s
test-sdk	54s
	16m 57s

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