Added Row-Level Policies to system.query_log

Why it matters

This feature enables filtering of system.query_log entries based on defined row-level security policies, enhancing data security and ensuring users only access query logs they are authorized to see.

How to use it

Define row-level security policies as usual for users, and these policies will now also be enforced automatically when accessing system.query_log. No additional configuration is required to apply these policies to the query log.