Tweak thinker selector to not pressure it to choose quickly #5010

Job	Run time
build-and-check	2m 37s
test-integration-cli	46s
test-integration-packages/billing	40s
test-integration-packages/agent-runtime	49s
test-integration-common	43s
test-integration-backend	39s
test-integration-.agents	1m 15s
test-integration-npm-app	40s
test-integration-packages/internal	41s
test-.agents	38s
test-cli	1m 8s
test-integration-sdk	58s
test-npm-app	42s
test-packages/internal	45s
test-packages/agent-runtime	1m 0s
test-web	47s
test-common	45s
test-packages/billing	39s
test-integration-web	37s
test-backend	48s
test-sdk	38s
	18m 15s

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