Sharing via a conversation/room opens the Send to dialog

### Steps to reproduce

1. Using an app that supports Conversations (e.g. Feeder), share something to a conversation

### Outcome

#### What did you expect?
It shares it to the room, or prepopulates the message entry field (like Google's Messages app does)

#### What happened instead?
It opens the "Send to" dialog to select which room it'll send to.

### Your phone model

Pixel 7

### Operating system version

Android 17

### Application version and app store

26.09.1

### Homeserver

mozilla.org

### Will you send logs?

Yes

### Will you submit a Pull Request?

No

Reproduce the sharing flow from an app that supports Conversations, such as Feeder, on the Android app using the reported Pixel 7 and application version. Start at the path that opens the "Send to" dialog and compare it with the expected room share or prepopulated message field; done means sharing reaches the selected room without the unnecessary dialog.

Written by the indexing model from the issue text.