fix：修正RN内引用报错

packages/cts-api/src/meta.ts

@@ -1,5 +1,15 @@
 export function getMetaData() {
   const nAgt = navigator.userAgent;
+  if (!nAgt) {
+    return {
+      device: 'app',
+      os: 'app',
+      os_version: '',
+      app: 'WebLiveClient',
+      app_version: '',
+      tag: {}
+    };
+  }
   let browserName = navigator.appName;
   let fullVersion = `${parseFloat(navigator.appVersion)}`;
   let majorVersion = parseInt(navigator.appVersion, 10);