Double notifications on Android (Always) & IOS (Sometimes)

Followed the documentation to create a notification service extension for ios: https://notifee.app/react-native/docs/ios/remote-notification-support

Server side: I am using firebase-admin (node js) and sending message like this:

const title = "Hi"
const body = "How are you"
const data = {
          type: "CHAT",
          jobId: "1",
          title,
          body,
        };
await getMessaging().sendMulticast({
          tokens: tokenList,
          data: data as any,
          notification: {
            title,
            body,
          },
          apns: {
            payload: {
              aps: {
                contentAvailable: true,
                mutableContent: true,
                sound: 'default',
              },
              notifee_options: {
                title,
                body,
                data,
                ios: {
                  foregroundPresentationOptions: {
                    alert: true,
                    badge: true,
                    sound: true,
                  },
                },
              },
            },
          },
        });

notifications seem to be working fine on IOS (sometimes i get 2 notifications on ios as well) but on Android i am getting 2 notifications consistently when app is in the background. I am using notifee.displayNotification to display the notification in both android and ios.

I believe i am seeing 2 notifications because i am using notification option which gets displayed automatically and then setBackgroundMessageHandler handles the notification and data again and show another notification.

I can remove the notification option while sending a multicast message but then it will break the ios notification. Any suggestions will be much appreciated.