fix: sessionHandler should be added with configureSession #293

Before: setSessionHandler was called when `accessToken` was null
See:  https://gist.github.com/sravan-s/4bfd6379c8561112a0fcd0bc3f1b7d15

Author: sravan-s

src/lib/dux/sdk/thunks.js

@@ -78,6 +78,7 @@ export const handleConnection = ({
         const newSdk = SendbirdChat.init(params);
         if (configureSession && typeof configureSession === 'function') {
           sessionHandler = configureSession(newSdk);
+          newSdk.setSessionHandler(sessionHandler);
         }
         // to check if code is released version from rollup and *not from storybook*
         // see rollup config file
@@ -113,9 +114,6 @@ export const handleConnection = ({
             .then((res) => connectCbSucess(res))
             .catch((err) => connectCbError(err));
         } else {
-          if (sessionHandler) {
-            newSdk.setSessionHandler(sessionHandler);
-          }
           newSdk.connect(userId)
             .then((res) => connectCbSucess(res))
             .catch((err) => connectCbError(err));