SQL: compatible_agg_types(Sum) omits CountMinSketch, the type the planner emits for approximate SUM #530

Scope: streaming_engine=precompute, SQL.

The planner emits AggregationType::CountMinSketch for approximate SQL SUM (asap-planner-rs/src/planner/sql.rs:201-206 → promql_utilities/src/query_logics/logics.rs:36-47).

The engine's capability-matching type filter for Statistic::Sum (asap_types/src/capability_matching.rs:21) only lists [Sum, MultipleSum] — CountMinSketch is missing (contrast with Statistic::Count at line 22-25, which does include it).

Result: a SUM query can never resolve via capability-matching regardless of label/window match, because its aggregation type is rejected by the type filter before any structural comparison happens.

Repro: find_compatible_aggregation with a CountMinSketch(sub_type="sum") config and matching Statistic::Sum requirement → None. Reproduced end-to-end via a plain SELECT SUM(cpu_usage) ... GROUP BY datacenter query too.