[r] Raise accumulator limit of AnVIL fields (#6793)

Author: dsotirho-ucsc

src/azul/plugins/metadata/anvil/indexer/aggregate.py

@@ -13,6 +13,7 @@
     Accumulator,
     DistinctAccumulator,
     GroupingAggregator,
+    SetAccumulator,
     SetOfDictAccumulator,
     SimpleAggregator,
     SumAccumulator,
@@ -61,6 +62,8 @@ class DiagnosisAggregator(SimpleAggregator):
     def _accumulator(self, field: str) -> Accumulator | None:
         if field in ('diagnosis_id', 'document_id', 'source_datarepo_row_ids'):
             return None
+        elif field == 'disease':
+            return SetAccumulator(max_size=900)
         elif field in ('diagnosis_age', 'onset_age'):
             return SetOfDictAccumulator(max_size=100,
                                         key=compose_keys(none_safe_tuple_key(none_last=True),