[Bug]: The embedded seeddb mode search result returns an empty memory content

[Ripcord55]

Describe the bug

The embedded seeddb mode search result returns an empty memory content

Environment

branch: embedded_seekdb

Fast reproduce steps

1. set OCEANBASE_PATH=./seekdb_data
2. pytest test_scenario_1_basic_usage.py::test_extension_exercise -vs

Expected behavior

N/A

Actual behavior

N/A

Additional context

N/A