[Bug]: Perps: Arrows to navigate back sometimes don't show up

### Describe the bug

Arrow to navigate back and exit the perps deposit confirmation was not showing up. It appeared on its own after a bit.

[Slack thread](https://consensys.slack.com/archives/C09T0L3SHCY/p1763137723558419)

### Expected behavior

Arrow to navigate back should always be visible.

### Screenshots/Recordings

### Steps to reproduce

1. Start a perps deposit

### Error messages or log output

```shell

```

### Detection stage

During release testing

### Version

7.60.0

### Build type

None

### Device

-

### Operating system

iOS

### Additional context

_No response_

### Severity

_No response_

Start from the perps deposit confirmation flow on iOS and reproduce the issue by starting a perps deposit. Trace when the back arrow is rendered, then verify it is visible immediately and remains available for exiting the confirmation screen.

Written by the indexing model from the issue text.