#3516487 Make sure $is_section is only set to true for layout components.

Closes #3516487

modules/mercury_editor_templates/src/EventSubscriber/LayoutParagraphsAllowedTypesSubscriber.php

@@ -80,15 +80,19 @@ class LayoutParagraphsAllowedTypesSubscriber implements EventSubscriberInterface
       $types = $event->getTypes();
       foreach ($templates as $template) {
         $skip_template = FALSE;
+        $is_section = FALSE;
         $paragraphs = $template->content->referencedEntities();
         // Check if any of the paragraphs in the template are a layout.
         foreach ($paragraphs as $paragraph) {
           $behaviors = $paragraph->getAllBehaviorSettings();
           $is_layout = isset($behaviors['layout_paragraphs']) && array_key_exists('layout', $behaviors['layout_paragraphs']);
-          if ($is_layout && $max_depth_exceeded) {
-            // If we are nested past the max depth and any of the paragraphs has a layout_paragraphs behavior, skip this template.
-            $skip_template = TRUE;
-            break;
+          if ($is_layout) {
+            $is_section = TRUE;
+            if ($max_depth_exceeded) {
+              // If we are nested past the max depth and any of the paragraphs has a layout_paragraphs behavior, skip this template.
+              $skip_template = TRUE;
+              break;
+            }
           }
         }
         if ($skip_template) {
@@ -102,7 +106,7 @@ class LayoutParagraphsAllowedTypesSubscriber implements EventSubscriberInterface
           'id' => 'me_template_' . $template->id(),
           'label' => $template->label(),
           'image' => FALSE,
-          'is_section' => TRUE,
+          'is_section' => $is_section,
           'is_template' => TRUE,
           'url_object' => $url,
         ];