Issue #3460536 by siliconandincense: TaxonomyEntityIndexDepth type conflict

Closes #3460536

src/Plugin/views/argument/TaxonomyEntityIndexDepth.php

@@ -97,14 +97,14 @@ abstract class TaxonomyEntityIndexDepth extends IndexTidDepth {
     if ($this->options['depth'] > 0) {
       $subquery->leftJoin('taxonomy_term__parent', 'th', "th.entity_id = tn.tid");
       $last = "th";
-      foreach (range(1, abs($this->options['depth'])) as $count) {
+      foreach (range(1, abs((int) $this->options['depth'])) as $count) {
         $subquery->leftJoin('taxonomy_term__parent', "th$count", "$last.parent_target_id = th$count.entity_id");
         $where->condition("th$count.entity_id", $tids, $operator);
         $last = "th$count";
       }
     }
     elseif ($this->options['depth'] < 0) {
-      foreach (range(1, abs($this->options['depth'])) as $count) {
+      foreach (range(1, abs((int) $this->options['depth'])) as $count) {
         $subquery->leftJoin('taxonomy_term__parent', "th$count", "$last.entity_id = th$count.parent_target_id");
         $where->condition("th$count.entity_id", $tids, $operator);
         $last = "th$count";