The `aggregation_dependency_graph_validation_passthrough` suite (introduced in SERVER-125083) injects `$_internalAssertDataAssumptions` stages before pipeline stages where the dependency graph reports a field as non-array (`canPathBeArray() == false`). This stage has no SBE lowering, so the SBE pushdown prefix scan in `getNumSbeCompatibleStagesForPushdown()` halts on it, preventing subsequent stages from being pushed down to SBE.

As a result, `$lookup` runs in the classic engine, which uses a nested-loop join strategy (`NestedLoopJoin`) rather than the SBE `IndexedLoopJoin`. The test's assertions on query stats — which assume SBE execution — diverge from the classic-engine values, causing `lookup_query_stats.js` to fail.

This is the same class of problem that caused the existing exclusion of `sbe_pushdown_replan_reason.js` (SERVER-127292). The test was not excluded when the suite was introduced.

Fix: exclude `lookup_query_stats.js` from the suite. The long-term fix — making `$_internalAssertDataAssumptions` transparent to SBE pushdown — is tracked in SERVER-127292

Linked BF: BF-44133