Fix potential Anthropic double-charge bug (didn't reach prod) #6089

Job	Run time
build-and-check	3m 18s
test-integration-packages/internal	1m 1s
test-integration-packages/billing	1m 2s
test-integration-web	39s
test-integration-packages/agent-runtime	52s
test-integration-sdk	1m 25s
test-integration-common	46s
test-packages/internal	47s
test-web	50s
test-common	52s
test-sdk	51s
test-cli	57s
test-integration-cli	39s
test-.agents	50s
test-packages/billing	50s
test-packages/agent-runtime	50s
	16m 29s

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