Reduce MAX_TOP_N_INDEX_READ_SIZE to 50

Signed-off-by: David Zane <[email protected]>

Author: dzane17

src/main/java/org/opensearch/plugin/insights/core/reader/LocalIndexReader.java

@@ -39,7 +39,7 @@
  * Local index reader for reading query insights data from local OpenSearch indices.
  */
 public final class LocalIndexReader implements QueryInsightsReader {
-    private final static int MAX_TOP_N_INDEX_READ_SIZE = 1000;
+    private final static int MAX_TOP_N_INDEX_READ_SIZE = 50;
     /**
      * Logger of the local index reader
      */