pkp/pkp-lib#10111 Dropped the reference assignment

(cherry picked from commit 9fec32e)

classes/search/PreprintSearch.php

@@ -43,9 +43,8 @@ public function getSparseArray($unorderedResults, $orderBy, $orderDir, $exclude)
         $resultCount = count($unorderedResults);
         $i = 0;
         $contextIds = [];
-        foreach ($unorderedResults as $submissionId => &$data) {
-            // Reference is necessary to permit modification
-            $data['score'] = ($resultCount * $data['count']) + $i++;
+        foreach ($unorderedResults as $submissionId => $data) {
+            $unorderedResults[$submissionId]['score'] = ($resultCount * $data['count']) + $i++;
             $contextIds[] = $data['server_id'];
         }