Improve freebuff model picker UX #6325

Job	Run time
build-and-check	3m 14s
test-integration-packages/internal	1m 11s
test-integration-packages/billing	1m 3s
test-integration-web	54s
test-integration-sdk	1m 14s
test-integration-cli	39s
test-integration-common	49s
test-integration-packages/agent-runtime	46s
test-.agents	43s
test-cli	55s
test-web	1m 11s
test-packages/internal	57s
test-common	45s
test-packages/billing	44s
test-sdk	42s
test-packages/agent-runtime	51s
	16m 38s

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