[BUG] Error hooks only run if the provider throws

[beeme1mr]

Observed behavior

The error hook only runs if the provider throws an exception. However, it's possible for a provider to return an error code in the ResolutionDetails.

Expected Behavior

The error hook runs if the ResolutionDetails contains an errorCode

Steps to reproduce

1. Register a provider that returns a ResolutionDetails object with an errorCode
2. Register a hook that relies on the error hook
3. Evaluate a flag

[beeme1mr]

We should add some clarifying text to the spec once this issue is addressed.

https://openfeature.dev/specification/sections/hooks#requirement-437