Disable approximation when there is terminate after (#18018)

Signed-off-by: Harsha Vamsi Kalluri <[email protected]>
(cherry picked from commit 8948c1f)
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

server/src/main/java/org/opensearch/search/approximate/ApproximatePointRangeQuery.java

@@ -444,7 +444,7 @@ public boolean canApproximate(SearchContext context) {
         if (context.from() + context.size() == 0) {
             this.setSize(SearchContext.DEFAULT_TRACK_TOTAL_HITS_UP_TO);
         } else {
-            this.setSize(Math.max(context.from() + context.size(), context.trackTotalHitsUpTo()));
+            this.setSize(Math.max(context.from() + context.size(), context.trackTotalHitsUpTo() + 1));
         }
         if (context.request() != null && context.request().source() != null) {
             FieldSortBuilder primarySortField = FieldSortBuilder.getPrimaryFieldSortOrNull(context.request().source());
@@ -463,6 +463,7 @@ public boolean canApproximate(SearchContext context) {
                 }
                 this.setSortOrder(primarySortField.order());
             }
+            return context.request().source().terminateAfter() == SearchContext.DEFAULT_TERMINATE_AFTER;
         }
         return true;
     }