Issue #3376516 by andypost, quietone: Remove check for 10200 update from help module

(cherry picked from commit 5a3ca127)

core/modules/help/help.module

@@ -148,11 +148,9 @@ function _help_search_update(array $extensions = []): void {
     return;
   }
 
-  if (\Drupal::service('update.update_hook_registry')->getInstalledVersion('help') >= 10200) {
-    // Ensure that topics for extensions that have been uninstalled are removed
-    // and that the index state variable is updated.
-    $help_search = \Drupal::service('plugin.manager.search')->createInstance('help_search');
-    $help_search->updateTopicList();
-    $help_search->updateIndexState();
-  }
+  // Ensure that topics for extensions that have been uninstalled are removed
+  // and that the index state variable is updated.
+  $help_search = \Drupal::service('plugin.manager.search')->createInstance('help_search');
+  $help_search->updateTopicList();
+  $help_search->updateIndexState();
 }

core/modules/help/src/HelpSectionManager.php

@@ -58,8 +58,9 @@ public function setSearchManager(?PluginManagerInterface $search_manager = NULL)
    */
   public function clearCachedDefinitions() {
     parent::clearCachedDefinitions();
-    $version = \Drupal::service('update.update_hook_registry')->getInstalledVersion('help');
-    if ($this->searchManager && $version >= 10200) {
+    // Search module may be missing. Help module might be installing,
+    // so its search plugin may not be discovered yet.
+    if ($this->searchManager && $this->searchManager->hasDefinition('help_search')) {
       // Rebuild the index on cache clear so that new help topics are indexed
       // and any changes due to help topics edits or translation changes are
       // picked up.