Fix pushdown of runtime filters in query plans when multiple expression projection steps exist below the filter.
Why it matters
This fix addresses an issue where runtime filter pushdown was not correctly applied in query plans containing multiple consecutive expression transformations below the runtime filter. By resolving this, runtime filters can now be effectively pushed down through complex expression chains, improving query execution efficiency and performance.How to use it
Users do not need to perform any additional actions. The fix is applied internally in the query optimizer, enhancing runtime filter pushdown automatically for queries involving expressions below runtime filters.