GDScript: Properly set class inheritance for global classes

modules/gdscript/gdscript_analyzer.cpp

@@ -213,6 +213,7 @@ Error GDScriptAnalyzer::resolve_inheritance(GDScriptParser::ClassNode *p_class,
 						push_error(vformat(R"(Could not resolve super class inheritance from "%s".)", name), p_class);
 						return err;
 					}
+					base = parser->get_parser()->head->get_datatype();
 				}
 			} else if (ProjectSettings::get_singleton()->has_autoload(name) && ProjectSettings::get_singleton()->get_autoload(name).is_singleton) {
 				const ProjectSettings::AutoloadInfo &info = ProjectSettings::get_singleton()->get_autoload(name);