[codex] Set Freebuff ad request user agent #6601

Job	Run time
build-and-check	3m 15s
test-integration-packages/internal	1m 12s
test-integration-packages/billing	1m 14s
test-integration-packages/agent-runtime	51s
test-integration-common	51s
test-integration-sdk	1m 16s
test-packages/internal	55s
test-packages/billing	48s
test-cli	1m 11s
test-packages/agent-runtime	42s
test-integration-cli	42s
test-integration-web	42s
test-.agents	46s
test-sdk	43s
test-web	56s
test-common	45s
	16m 49s

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