Restore state-backed tool call IDs #6486

Job	Run time
build-and-check	3m 27s
test-integration-packages/internal	1m 22s
test-integration-packages/billing	1m 21s
test-integration-packages/agent-runtime	58s
test-integration-cli	50s
test-integration-web	55s
test-integration-common	1m 6s
test-integration-sdk	1m 37s
test-cli	1m 1s
test-packages/internal	1m 6s
test-web	1m 30s
test-sdk	55s
test-common	50s
test-packages/agent-runtime	53s
test-packages/billing	1m 3s
test-.agents	1m 12s
	20m 6s

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