[Bug]: Transaction complete screen displays question mark on upper right side

### Describe the bug

The transaction complete screen displays a question mark `?` in the upper right side, where the `X` to close the window used to be

### Expected behavior

No question mark

### Screenshots/Recordings

### Steps to reproduce

1. Perform any transaction
2. Click on Transaction complete toast
3. Notice question mark in the upper right side of the screen

### Error messages or log output

```shell

```

### Where was this bug found?

Internal release testing

### Version

8.12.0

### Build number

6925

### Build type

None

### Device

iPhone 15, Pixel 6 Pro

### Operating system

iOS, Android

### Additional context

_No response_

### Severity

_No response_

Reproduce the issue by completing a transaction and opening the Transaction complete toast on iOS or Android, then trace the screen's upper-right close control. Confirm the fix by verifying that the question mark is gone and the expected X or close behavior is restored on both platforms.

Written by the indexing model from the issue text.