[Bug]: Predictions claimed win transaction shows $0.00 and 0 POL on Activity screen

### Describe the bug

After claiming a prediction market win, the transaction on the Activity > Transactions screen shows $0.00 fiat balance and 0 POL instead of the actual claimed amount.

### Expected behavior

The claimed win transaction should display the correct fiat balance and POL amount that was claimed.

### Screenshots/Recordings

### Steps to reproduce

1. Win a prediction market position
2. Claim the winnings
3. Go to Activity > Transactions screen
4. Observe: the claimed win transaction shows $0.00 fiat balance and 0 POL instead of the actual claim amount

### Error messages or log output

```
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### Where was this bug found?

Internal release testing

### Version

7.69.0

### Build number

3954

### Build type

_No response_

### Device

Samsung Galaxy A42

### Operating system

Android 13

### Additional context

_No response_

### Severity

_To be added after bug submission by internal support / PM:_

Start at the Activity > Transactions screen and reproduce the claimed prediction-market win on Android 13 using version 7.69.0, build 3954. Trace how the claim transaction is displayed and verify that the screen shows the actual claimed fiat balance and POL amount instead of $0.00 and 0 POL.

Written by the indexing model from the issue text.