to 2.0: switch the size getter of the show accounts to mo_table_size. #24571

Job	Run time
CHECK PR VALID	9s
Matrixone CI / SCA Test on Ubuntu/x86	6m 8s
Matrixone CI / UT Test on Ubuntu/x86	10m 16s
Matrixone CI / UT Test on Darwin/x86	0s
Matrixone Standlone CI / Multi-CN e2e BVT Test on Linux/x64(LAUNCH, PROXY)	10m 52s
Matrixone Standlone CI / e2e BVT Test on Linux/x64(LAUNCH,Optimistic)	9m 54s
Matrixone Upgrade CI / Compatibility Test With Target on Linux/x64(LAUNCH)	9m 17s
Matrixone Standlone CI / e2e BVT Test on Linux/x64(LAUNCH, PESSIMISTIC)	10m 52s
Matrixone Compose CI / multi cn e2e bvt test docker compose(Optimistic/PUSH)	9m 51s
Matrixone Compose CI / multi cn e2e bvt test docker compose(PESSIMISTIC)	8m 55s
Matrixone Upgrade CI / Compatibility Test With Release on Linux/x64(LAUNCH)	0s
Matrixone Utils CI / check_organization_user	4s
Matrixone Utils CI / pr-size-label	3s
Matrixone Utils CI / docu_issue_check	3s
Matrixone Utils CI / PR Unit and BVT Test Coverage	4m 34s
	1h 20m 58s

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