Nested migrated field_collection items are still having field_collection_item as parent type set. Fix it.

fix-nested-pargraph-parent-type.patch

diff --git a/src/Plugin/migrate/source/d7/FieldCollectionItem.php b/src/Plugin/migrate/source/d7/FieldCollectionItem.php
index 0dc9460..f34fc2d 100644
--- a/src/Plugin/migrate/source/d7/FieldCollectionItem.php
+++ b/src/Plugin/migrate/source/d7/FieldCollectionItem.php
@@ -71,8 +71,12 @@ class FieldCollectionItem extends FieldableEntity {
         ])
         ->range(0, 1);
       $parent_row = $query->execute()->fetchObject();
+      $parent_type = $parent_row->entity_type;
+      if ($parent_type == 'field_collection_item') {
+        $parent_type = 'paragraph';
+      }
       $row->setSourceProperty('parent_id', $parent_row->entity_id);
-      $row->setSourceProperty('parent_type', $parent_row->entity_type);
+      $row->setSourceProperty('parent_type', $parent_type);
     }
 
     // Get Field API field values.