Nice design clean up of model selection screen #6456

Job	Run time
build-and-check	3m 6s
test-integration-packages/internal	1m 7s
test-integration-packages/billing	1m 15s
test-integration-web	45s
test-integration-common	42s
test-integration-sdk	1m 25s
test-integration-cli	1m 1s
test-integration-packages/agent-runtime	43s
test-packages/agent-runtime	46s
test-.agents	46s
test-packages/billing	53s
test-web	1m 46s
test-cli	50s
test-packages/internal	48s
test-common	47s
test-sdk	44s
	17m 24s

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