fix for WxT Upgrade where rich_text is unavailable

wxtupdate420-toc.patch

diff --git a/modules/custom/wxt_core/src/UpdateWxT/UpdateWxT420.php b/modules/custom/wxt_core/src/UpdateWxT/UpdateWxT420.php
index 2d086ab..a1b66b8 100644
--- a/modules/custom/wxt_core/src/UpdateWxT/UpdateWxT420.php
+++ b/modules/custom/wxt_core/src/UpdateWxT/UpdateWxT420.php
@@ -64,25 +64,29 @@ public function enableCKEditorTOC() {
     $this->moduleInstaller->install(['toc_filter']);
 
     $format = FilterFormat::load('rich_text');
-    $configuration = $format->filters('filter_caption')->getConfiguration();
-    $format->setFilterConfig('entity_embed', ['weight' => $configuration['weight'] + 1]);
-    $format->setFilterConfig('toc_filter', ['status' => TRUE, 'settings' => ['type' => 'wxt']]);
-    $format->save();
+    if ($format) {
+      $configuration = $format->filters('filter_caption')->getConfiguration();
+      $format->setFilterConfig('entity_embed', ['weight' => $configuration['weight'] + 1]);
+      $format->setFilterConfig('toc_filter', ['status' => TRUE, 'settings' => ['type' => 'wxt']]);
+      $format->save();
+    }
 
     $this->moduleInstaller->install(['ckeditor_abbreviation']);
 
     $editor = Editor::load('rich_text');
-    $settings = $editor->getSettings();
-    $rows = $settings['toolbar']['rows'];
-    foreach ($rows as $row_key => $row) {
-      foreach ($row as $group_key => $group) {
-        if ($group['name'] === 'WET Components') {
-          array_unshift($settings['toolbar']['rows'][$row_key][$group_key]['items'], "abbr");
+    if ($editor) {
+      $settings = $editor->getSettings();
+      $rows = $settings['toolbar']['rows'];
+      foreach ($rows as $row_key => $row) {
+        foreach ($row as $group_key => $group) {
+          if ($group['name'] === 'WET Components') {
+            array_unshift($settings['toolbar']['rows'][$row_key][$group_key]['items'], "abbr");
+          }
         }
       }
+      $editor->setSettings($settings);
+      $editor->save();
     }
-    $editor->setSettings($settings);
-    $editor->save();
   }
 
   /**
@@ -96,6 +100,9 @@ public function enableCKEditorAbbreviation() {
     $this->moduleInstaller->install(['ckeditor_abbreviation']);
 
     $editor = Editor::load('rich_text');
+    if (!$editor) {
+      return;
+    }
     $settings = $editor->getSettings();
     $rows = $settings['toolbar']['rows'];
     foreach ($rows as $row_key => $row) {
@@ -118,6 +125,9 @@ public function enableCKEditorAbbreviation() {
    */
   public function enableCKEditorAlert() {
     $editor = Editor::load('rich_text');
+    if (!$editor) {
+      return;
+    }
     $settings = $editor->getSettings();
     $rows = $settings['toolbar']['rows'];
     foreach ($rows as $row_key => $row) {
@@ -140,6 +150,9 @@ public function enableCKEditorAlert() {
    */
   public function enableCKEditorFootnotes() {
     $editor = Editor::load('rich_text');
+    if (!$editor) {
+      return;
+    }
     $settings = $editor->getSettings();
     $rows = $settings['toolbar']['rows'];
     foreach ($rows as $row_key => $row) {