add: 错误报警邮件增加traceId

src/Log/FileLog.php

@@ -69,6 +69,7 @@ class FileLog
         }
         $subject = 'App api #' . $signature . '# ' . $_SERVER['SERVER_NAME'] . ' (' . $_SERVER['SERVER_ADDR'] . ') Alert Message';
         $body = 'Error: ' . $signature . "\n\n";
+        $body .= 'traceId: ' . $traceId . "\n\n";
         $body .= 'Detail info: ' . $detail_info . "\n\n";
         $body .= 'Exception info: ' . $exception_info . "\n\n";
         $body .= 'Request info: ' . self::accessLog() . "\n\n";