[6.x] Make newPivotQuery public (#31677)

* Make newPivotQuery public

* Make newPivotQuery public

Author: krychu90

src/Illuminate/Database/Eloquent/Relations/Concerns/InteractsWithPivotTable.php

@@ -532,7 +532,7 @@ public function newPivotStatementForId($id)
      *
      * @return \Illuminate\Database\Query\Builder
      */
-    protected function newPivotQuery()
+    public function newPivotQuery()
     {
         $query = $this->newPivotStatement();
 

src/Illuminate/Database/Eloquent/Relations/MorphToMany.php

@@ -120,7 +120,7 @@ public function getRelationExistenceQuery(Builder $query, Builder $parentQuery,
      *
      * @return \Illuminate\Database\Query\Builder
      */
-    protected function newPivotQuery()
+    public function newPivotQuery()
     {
         return parent::newPivotQuery()->where($this->morphType, $this->morphClass);
     }