Fix token counter for images #5370

Job	Run time
build-and-check	2m 36s
test-packages/agent-runtime	54s
test-common	41s
test-packages/billing	39s
test-.agents	38s
test-sdk	49s
test-packages/internal	44s
test-web	50s
test-integration-common	49s
test-cli	1m 18s
test-integration-packages/internal	39s
test-integration-sdk	46s
test-integration-web	41s
test-integration-cli	39s
test-integration-.agents	39s
test-integration-packages/agent-runtime	46s
test-integration-packages/billing	39s
	14m 47s

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