[Bug]: Batch Swap - Approval amount in Mobile (0.5USDC) differs from Extension (0.5USDC +0.5USDC = Total $1)

### Describe the bug

Whenever we are performing a Batch Swap (multiple tx's), the exact same transaction for Extension and Mobile leads to different results in the Estimated balance changes:
- Extension:
- You approve 0.5 USDC + 0.5 USDC -> Total 1$
- You send 0.5 USDC
- You receive 0.000143 ETH
- Nobile:
- You approve 0.5 USDC
- You send 0.5 USDC
- You receive 0.000143 ETH

### Expected behavior

Same result for Extension and Mobile

### Screenshots/Recordings

https://github.com/user-attachments/assets/5acf98c5-4840-48b4-b2aa-60569ebef52d

### Steps to reproduce

1. Go to the test dapp
2. Connect with Ethereum Mainnet
3. Trigger a Execute Batch Swap for Extension and Mobile
4. See differences in the approve

### Error messages or log output

```shell

```

### Where was this bug found?

Internal release testing

### Version

7.80.0 and extension 13.37 , but the miss-match seems it might be an older issue (unsure if the issue is in the Mobile or in Extension side)

### Build number

5617

### Build type

None

### Device

Pixel 6

### Operating system

Android

### Additional context

_No response_

### Severity

_No response_

Start with the test dapp and the batch-swap transaction flow described in the reproduction steps, then compare how Mobile and Extension calculate approval amounts for the same batch. Confirm which side produces the mismatch and verify that both clients show the same approval total while preserving the stated send and receive amounts.

Written by the indexing model from the issue text.