Method ExecuteTreeGroupedAggregateAsync<TProps>(TreeQueryContext<TProps>, IEnumerable<GroupFieldRequest>, IEnumerable<AggregateRequest>)

Execute GROUP BY with tree context (CTE for tree traversal).
Base implementation: gets tree object IDs first, then delegates to base GroupBy with filter.
Override in Pro version for optimized CTE-based implementation.

public virtual Task<JsonDocument?> ExecuteTreeGroupedAggregateAsync<TProps>(TreeQueryContext<TProps> context, IEnumerable<GroupFieldRequest> groupFields, IEnumerable<AggregateRequest> aggregations) where TProps : class, new()