fix: manifest auth (#1342)

Author: SputNikPlop

android/app/src/main/AndroidManifest.xml

@@ -58,7 +58,7 @@
                 <data android:mimeType="text/plain" />
             </intent-filter>
         </activity>
-        <activity android:name="com.linusu.flutter_web_auth.CallbackActivity" android:exported="true">
+        <activity android:name="com.linusu.flutter_web_auth_2.CallbackActivity" android:exported="true">
             <intent-filter android:label="flutter_web_auth">
                 <action android:name="android.intent.action.VIEW" />