Fix issue when cond edge visited after multiple executions of Send #1080

Job	Run time
build	5s
lint-js (libs/sdk-js)	17s
CLI integration test / CLI integration test (3.10)	5s
CLI integration test / CLI integration test (3.11)	7s
cd libs/cli / test #3.9	6s
cd libs/cli / test #3.10	5s
cd libs/cli / test #3.11	4s
cd libs/cli / lint #3.9	4s
cd libs/langgraph / test #3.9	5m 7s
cd libs/cli / test #3.12	5s
cd libs/cli / lint #3.11	5s
cd libs/langgraph / test #3.10	5m 2s
cd libs/langgraph / test #3.11	5m 9s
cd libs/langgraph / lint #3.9	1m 12s
cd libs/langgraph / test #3.12	5m 47s
cd libs/langgraph / lint #3.11	1m 0s
cd libs/sdk-py / lint #3.9	7s
cd libs/sdk-py / lint #3.11	4s
CI Success	1s
	24m 32s

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