AC-3560::Fix potential problems with "RFC: Deprecate passing null" for Magento page-builder

Author: jayrangnani-gl

app/code/Magento/PageBuilder/Model/Filter/Template.php

@@ -221,7 +221,7 @@ private function generateDecodedHtmlPlaceholderMappingInDocument(DOMDocument $do
             $htmlContentTypeNode->setAttribute('data-decoded', 'true');
 
             // if nothing exists inside the node, continue
-            if (!strlen(trim($htmlContentTypeNode->nodeValue))) {
+            if (!strlen(trim($htmlContentTypeNode->nodeValue ?? ''))) {
                 continue;
             }
 

app/code/Magento/PageBuilderAnalytics/Model/ContentTypeUsageReportProvider.php

@@ -102,7 +102,7 @@ public function getReport($name) : \IteratorIterator
                     foreach ($contentTypes as $type) {
                         // Count the amount of content types within the content
                         $rowContent = $row['content'] ?? '';
-                        if (strlen($rowContent) > 0) {
+                        if ($rowContent !== null && strlen($rowContent) > 0) {
                             $typeCounts[$type['name']] += substr_count(
                                 $rowContent,
                                 'data-content-type="' . $type['name'] . '"'