ActivityNotFoundException

Sentry Issue: [SIMPLENOTE-ANDROID-AS1](https://a8c.sentry.io/issues/5875139923/?referrer=github_integration)

```
ActivityNotFoundException: None
at com.automattic.simplenote.authentication.SignInFragment.inflateLayout$lambda-2(SignInFragment.kt:94)
at com.automattic.simplenote.authentication.SignInFragment.$r8$lambda$OEjxywj1IVUTuKSPb5njbSn0LRQ(SignInFragment.kt:0)
at com.automattic.simplenote.authentication.SignInFragment$$InternalSyntheticLambda$1$1c773aef1435b4c3614bfed64567dbadfb6f0628c4902d250a8806c07e2a9cf1$0.onClick(SignInFragment:0)
...
(14 additional frame(s) were not displayed)
```

Start in SignInFragment.kt at line 94, where the Sentry trace reports ActivityNotFoundException during inflateLayout. Reproduce the sign-in interaction if possible and inspect the activity-launch or layout-related context around that line. Done means identifying the missing activity condition and confirming the sign-in flow no longer raises this exception.

Written by the indexing model from the issue text.