Multiple instance of talk

[PH03N1X999]

Steps to reproduce

Just open talk and make a call or msg someone and minimize the app or press back, after sometime if you get a call or msg just open and this will open a new instance of app rather than display in already opened instance.
Also you can reproduce it by opening the app and download a video or image from any user it will open the video or image in another instance.

Expected behaviour

Only one instance of talk app should be opened rather than multiple.

Actual behaviour

The app opens multiple instance which led to no incoming notifications also the user and the opposite parties cannot make a call (shows error : Something went wrong) or calls go into ringing looping without any response or error messages.
I also checked the diagnosis while multiple apps open and firebase push token and latest push registration was done at the time which the app was opened first time.
I think this Is what makes the notifications not working properly.

Device brand and model

OPPO FIND X6 PRO

Android version

15

Nextcloud Talk app version

20.1.1

Nextcloud server version

30.0.5

Talk version

20.1.3

Custom Signaling server configured

Yes (specify version in Additional Information)

Custom TURN server configured

Yes

Custom STUN server configured

Yes

Android logs

No response

Server log

Additional information

For signaling, turn and stun service versions I'm using the AIO docker versions.
Proof has been attached for your reference

[PH03N1X999]

@mahibi

Counting on you and your friends to fix the issues

[mahibi]

related: #4326