exported actions should wrap getAction

[holic]

I want to use tree-shakable actions in my SDK like

import { writeContract } from "viem/actions";
writeContract(client, { ... });

However, this currently bypasses any actions set up in the client via client.extend(...). I'd love if the actions exported by viem internally used getAction to get the action from the client.

I expect the underlying implementation (current viem action exports) will still need to be exported from another location so that its still possible to write custom actions with fallbacks to the native viem behavior.