Error: Smart Transaction does not have a transaction hash, there was a problem

Sentry Issue: [METAMASK-MOBILE-2G81](https://metamask.sentry.io/issues/5525681787/?referrer=github_integration)

```
Error: Smart Transaction does not have a transaction hash, there was a problem
at ?anon_0_ (app/util/smart-transactions/smart-publish-hook.ts:256:22)
...
(11 additional frame(s) were not displayed)
```

Start with app/util/smart-transactions/smart-publish-hook.ts around line 256 and review the linked Sentry report. Trace how the Smart Transaction result reaches this error and identify the missing transaction-hash case; done means the reported failure is handled or prevented, with regression coverage if the existing code provides a suitable test location.

Written by the indexing model from the issue text.