correct the name of the editors-xtd group plugins class

editors-xtd group plugins class name must have a (plgButton<PluginName>) structure, but JCB creates the names of these classes with (plg<PluginGroup><PluginName>) structure, which makes this type of plugins not work

admin/helpers/compiler/a_Get.php

@@ -10149,9 +10149,7 @@ class Get
 				// set lang prefix
 				$plugin->lang_prefix = $this->langPrefix;
 				// set plugin class name
-				$plugin->class_name = 'Plg' . ucfirst($plugin->group) . ucfirst(
+				$plugin->class_name = ComponentbuilderHelper::createPluginClassName($plugin->group, $plugin->code_name);
-						$plugin->code_name
-					);
 				// set plugin install class name
 				$plugin->installer_class_name = 'plg' . ucfirst($plugin->group)
 					. ucfirst($plugin->code_name) . 'InstallerScript';

admin/helpers/componentbuilder.php

@@ -6589,6 +6589,20 @@ abstract class ComponentbuilderHelper
 		return false;
 	}
 
+        /**
+         * create plugin class name
+         */
+        public static function createPluginClassName($group, $code_name)
+        {
+            // editors-xtd group plugins must have a class with plgButton<PluginName> structure
+            if ($group == 'editors-xtd')
+                $group= 'Button';
+
+            return 'Plg' . ucfirst($group) . ucfirst(
+                    $code_name
+                );
+        }
+  
 	/**
 	 * get a plugin fields IDs
 	 */

site/helpers/componentbuilder.php

@@ -6624,6 +6624,21 @@ abstract class ComponentbuilderHelper
 		return false;
 	}
 
+
+        /**
+         * create plugin class name
+         */
+        public static function createPluginClassName($group, $code_name)
+        {
+            // editors-xtd group plugins must have a class with plgButton<PluginName> structure
+            if ($group == 'editors-xtd')
+                $group= 'Button';
+
+            return 'Plg' . ucfirst($group) . ucfirst(
+                    $code_name
+                );
+        }
+
 	/**
 	 * get an admin view fields IDs
 	 */