[Bug]: UX Improvement: Unclear fee breakdown in Convert feature compared to Swap

### Describe the bug

I tried to convert 30 USDC on Linea to mUSD. I was quoted a $0.32 transaction fee and a $0 MetaMask fee. I tried to compare these fees to the Swap experience and am confused. Does the “transaction fee” in the Convert screen correspond to $0.07 network fee + the 0.875% MetaMask fee?

**Screenshots/Recordings**

### Steps to Reproduce

1. Open MetaMask mobile app
2. Navigate to Linea network
3. Ensure you have USDC in your wallet
4. Navigate to the Convert feature
5. Select USDC as the source token
6. Enter 30 USDC as the amount to convert
7. Select mUSD as the destination token
8. Observe the fee breakdown displayed:
Transaction fee: $0.32
MetaMask fee: $0
9. Navigate to the Swap feature
10. Set up the same swap (30 USDC to mUSD on Linea)
11. Observe the fee breakdown displayed in Swap
12. Compare the two fee structures

### Error messages or log output

```shell

```

**Where was this bug found?**

Live version (from official store)

### Version

7.62.123

### Build number

3445

### Build type

Beta

**Device**

Moto G Power, Android 11

### Operating system

Android

[Jira issue](https://consensyssoftware.atlassian.net/browse/MCTP-264)

### Expected behavior

No response

### Screenshots/Recordings

No response

### Steps to reproduce

1. Open MetaMask mobile app
2. Navigate to Linea network
3. Ensure you have USDC in your wallet
4. Navigate to the Convert feature
5. Select USDC as the source token
6. Enter 30 USDC as the amount to convert
7. Select mUSD as the destination token
8. Observe the fee breakdown displayed:
Transaction fee: $0.32
MetaMask fee: $0
9. Navigate to the Swap feature
10. Set up the same swap (30 USDC to mUSD on Linea)
11. Observe the fee breakdown displayed in Swap
12. Compare the two fee structures

### Error messages or log output

```shell

```

### Where was this bug found?

No response

### Version

7.62.123

### Build number

3445

### Build type

Beta

### Device

No response

### Operating system

Android

### Additional context

No response

### Severity

Sev2