Merge pull request #1598 from OneSignal/change/open_url_activity_flags

[Change] After opening a notification with a URL deeplink, the back button will return to the previous Activity

Author: jkasten2

OneSignalSDK/onesignal/src/main/java/com/onesignal/OSUtils.java

@@ -579,10 +579,7 @@ static Intent openURLInBrowserIntent(@NonNull Uri uri) {
             break;
       }
       intent.addFlags(
-          Intent.FLAG_ACTIVITY_NO_HISTORY |
-          Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET |
-          Intent.FLAG_ACTIVITY_MULTIPLE_TASK |
-          Intent.FLAG_ACTIVITY_NEW_TASK
+         Intent.FLAG_ACTIVITY_NEW_TASK
       );
       return intent;
    }