[Bug] On extension infinite spinner after cancelling solana transaction

### What is this about?

https://github.com/user-attachments/assets/8d98f61c-b481-45f7-882b-0431c5b2f3b9

### 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)
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### References

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Start with the attached recording and reproduce the Solana transaction flow through cancellation in the extension. Trace the state that controls the spinner after cancellation and identify the existing transaction or UI tests, if any. Done means cancelling the transaction reliably ends the loading state instead of leaving an infinite spinner.

Written by the indexing model from the issue text.