Fix bug: double free in Top Operator #26984

Job	Run time
CHECK PR VALID	2s
Matrixone Compose CI / multi cn e2e bvt test docker compose(Optimistic/PUSH)	21m 38s
Matrixone CI / UT Test on Ubuntu/x86	18m 23s
Matrixone Compose CI / multi cn e2e bvt test docker compose(PESSIMISTIC)	28m 9s
Matrixone CI / UT Test on Darwin/x86	0s
Matrixone CI / SCA Test on Ubuntu/x86	10m 27s
Matrixone Standlone CI / e2e BVT Test on Linux/x64(LAUNCH,Optimistic)	37m 0s
Matrixone Standlone CI / Multi-CN e2e BVT Test on Linux/x64(LAUNCH, PROXY)	27m 11s
Matrixone Standlone CI / e2e BVT Test on Linux/x64(LAUNCH, PESSIMISTIC)	23m 53s
Matrixone Upgrade CI / Compatibility Test With Target on Linux/x64(LAUNCH)	49m 0s
Matrixone Upgrade CI / Compatibility Test With Release on Linux/x64(LAUNCH)	48m 30s
Matrixone Utils CI / check_organization_user	4s
Matrixone Utils CI / pr-size-label	4s
Matrixone Utils CI / Coverage	58m 36s
Matrixone Utils CI / docu_issue_check	0s
	5h 22m 57s

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