Hook execution behavior

[tcarrio]

Please see the open discussion here for more information: open-feature/spec#164

Essentially, some SDKs simply reverse the calculated before hooks (API, Client, Invocation, Provider), and others generate the list with the original lists of Provider, Invocation, Client, and API.

This can result in varying behavior between SDKs.

The preference in the JS SDK is reversal. The Python SDK has also been updated to do reversal. PHP should likely do the same, but there is continuing discussion on the issue linked.