SQLBatchRequestResultSet needs design optimization

- why SQLBatchRequestResultSet needs a brpc:Controller?
- SQLBatchRequestResultSet can get common view & non common view directly. We don't need to get all cols, then check if constant, push to common or non common data resp. It's meaningless decode and encode.
- SQLBatchRequestResultSet::GetSchema doesn't have the propery of constance. But we can't get common idx from SQLBatchRequestResultSet.

Examine SQLBatchRequestResultSet class in the codebase to understand its current design and usage of brpc::Controller. Identify where common and non-common views are handled and how schema retrieval works. Look for existing tests related to result sets to understand expected behavior after optimization.

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