Increase step between checks for cancellation

Check for cancellation every 1024 docs instead of every 15 to lower
the impact of the check in query's performance.

Fixes: elastic#53496

Author: matriv

server/src/main/java/org/elasticsearch/search/internal/ExitableDirectoryReader.java

@@ -245,7 +245,7 @@ public int getDocCount() {
 
     private static class ExitableIntersectVisitor implements PointValues.IntersectVisitor {
 
-        private static final int MAX_CALLS_BEFORE_QUERY_TIMEOUT_CHECK = (1 << 4) - 1; // 15
+        private static final int MAX_CALLS_BEFORE_QUERY_TIMEOUT_CHECK = 1 << 10; // 1024
 
         private final PointValues.IntersectVisitor in;
         private final QueryCancellation queryCancellation;