Dollar amounts in Money Account Home are sometimes rendered as if they are preferred currency

### What is this about?

[Slack thread](https://consensys.slack.com/archives/C0A134JNHRV/p1782891817005869)

In some cases we show the user’s preferred currency symbol instead of dollars when we show fiat amounts, even when the amount is not denominated in dollars.

This applies to the money activity list, money home and the money activity details.

Short term Solution
We should, where we show dollars, always show the dollar symbol.

https://consensyssoftware.atlassian.net/browse/MUSD-1097

### Scenario

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### Design

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### Technical Details

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### Threat Modeling Framework

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### Acceptance Criteria

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### Stakeholder review needed before the work gets merged

- [ ] Engineering (needed in most cases)
- [ ] Design
- [ ] Product
- [ ] QA (automation tests are required to pass before merging PRs but not all changes are covered by automation tests - please review if QA is needed beyond automation tests)
- [ ] Security
- [ ] Legal
- [ ] Marketing
- [ ] Management (please specify)
- [ ] Other (please specify)

### References

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