feat(sdk,client): target es2015 for old chromecast compatibility

pkg/sdk/client/dist/client.js

@@ -3960,6 +3960,7 @@ var Edge = (() => {
           reject(new Error("Edge auth token request timed out !"));
         }, timeout);
         const listener = (evt) => {
+          var _a;
           const message2 = evt.data;
           if (!message2 || !message2.type || !message2.data) {
             return;
@@ -3975,7 +3976,7 @@ var Edge = (() => {
             reject("Unexpected auth token request response !");
             return;
           }
-          resolve(message2.data?.token || "");
+          resolve(((_a = message2.data) == null ? void 0 : _a.token) || "");
         };
         window.addEventListener("message", listener);
         const message = { type: EdgeAuthTokenRequest };