Set default size for terms aggregation

Replaces usage of getLimit() with getSetLimit() and applies a default size of 10 if not set. ES default

Author: pdphilip

src/Query/Grammar.php

@@ -941,7 +941,7 @@ protected function compileNestedTermAggregations($fields, Builder $query, $aggs
         return DslFactory::nestedTermsAggregation(
             fieldName: $currentField,
             field: $field,
-            size: $query->getLimit(),
+            size: $query->getSetLimit() ?? 10, // Default size for terms aggregation
             orders: $termsOrders,
             metricAggs: $metricAggs,
             subAggs: $subAggs