Add engine test on performance insensitive mode

**Is your feature request related to a problem? Please describe.**
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
The issue is going to add engine run test on performance insensitive mode.
**Describe the solution you'd like**
A clear and concise description of what you want to happen.

**Describe alternatives you've considered**
A clear and concise description of any alternative solutions or features you've considered.

**Additional context**
Add any other context or screenshots about the feature request here.

Look for engine tests in the codebase, likely under a test directory. Understand what 'performance insensitive mode' means in OpenMLDB's context. Check existing engine tests to see how they are structured and what they validate. The goal is to add a new test that runs the engine in this specific mode.

Written by the indexing model from the issue text.