[PM-24709] Session Timeout as Immediately Brokes Attachments on Android

### Steps To Reproduce

I bought personal premium for `attachments` but if I enable `Settings / Account security / Unlock with Biometrics` and set `Session Timeout` as `Immediately`, attachment adding doesn't work on Android (Samsung Galaxy S23 Android 15. There is NO custom rom or root.) because app goes background and file manager opens. When Bitwarden returns, it asks my finger print and open main menu without adding my attachments. Also, there is no third party file manager other than Samsun's default one.

In short, app can't hold its last state at memory. You can say **don't set session timeout immediately** but it is not a solution and why not ? it is the secured solution.

### Expected Result

Successfuly adding an attachment to an entry such as secure note.

### Actual Result

app goes background and file manager opens. When Bitwarden returns, it asks my finger print and open main menu without adding my attachments.

### Screenshots or Videos

_No response_

### Additional Context

_No response_

### Build Version

2025.7.2 (20551)

### What server are you connecting to?

EU

### Self-host Server Version

_No response_

### Environment Details

Samsung Galaxy S23 Android 15

### Issue Tracking Info

- [x] I understand that work is tracked outside of Github. A PR will be linked to this issue should one be opened to address it, but Bitwarden doesn't use fields like "assigned", "milestone", or "project" to track progress.