[Bug]: mUSD Claim bonus modal is slow to load

### Describe the bug

After tapping "Claim bonus" for mUSD on the token list, the claim bonus modal/confirmation screen takes a long time to load. This is a performance issue that impacts the user experience.

### Expected behavior

The claim bonus modal should load promptly after tapping "Claim bonus".

### Screenshots/Recordings

https://consensys.zoom.us/clips/share/0jSTcHYqQPixPbrB0zS5Jg

### Steps to reproduce

1. Have mUSD with an unclaimed Merkl bonus
2. View the token list on the home screen
3. Tap "Claim bonus" on the mUSD token row
4. Observe: the claim bonus modal takes a long time to load

### 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 by reproducing the issue on the Samsung Galaxy A42 running Android 13, using version 7.69.0 build 3954. Trace the flow from the mUSD token row's "Claim bonus" action through the claim bonus modal, and confirm that the modal loads promptly after the change.

Written by the indexing model from the issue text.