[codex] Disable CLI diff rendering (#611) #6469

Job	Run time
build-and-check	3m 16s
test-integration-packages/internal	1m 26s
test-integration-packages/billing	1m 32s
test-integration-packages/agent-runtime	57s
test-integration-cli	39s
test-integration-web	51s
test-cli	1m 1s
test-integration-sdk	1m 22s
test-integration-common	45s
test-packages/internal	53s
test-packages/agent-runtime	47s
test-.agents	44s
test-common	40s
test-packages/billing	41s
test-sdk	49s
test-web	1m 11s
	17m 34s

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