Multiple Element windows appear in Android history window

### Steps to reproduce

To reproduce this:
1. Share links or items from other apps running under Android.
2. Repeat step one a couple of more times.
3. Display Android's list of open apps.
4. Note that there's a separate Element window shown for each time you shared something to it.

### Outcome

#### What did you expect?
A single Element window to appear in the list of open apps.

#### What happened instead?
I got a separate Element window for each item I shared into it from another apps.

### Your phone model

Samsung Galaxy Tab S6 Lite

### Operating system version

Android 13

### Application version and app store

Element v1.6.20 from F-Droid

### Homeserver

matrix.org

### Will you send logs?

No

### Are you willing to provide a PR?

No