fix(install): run issues synchronization after install

Author: btry

install/install.php

@@ -23,6 +23,9 @@ public function install(Migration $migration) {
       $this->createNotifications();
       Config::setConfigurationValues('formcreator', ['schema_version' => PLUGIN_FORMCREATOR_SCHEMA_VERSION]);
 
+      $task = new CronTask();
+      PluginFormcreatorIssue::cronSyncIssues($task);
+
       return true;
    }