[Feature] Use Upstream Forkchoice Version (#347)

<!--
Thank you for your Pull Request. Please provide a description above and
review
the requirements below.

Bug fixes and new features should include tests.

Contributors guide:
https://github.com/alloy-rs/core/blob/main/CONTRIBUTING.md

The contributors guide includes instructions for running rustfmt and
building the
documentation.
-->

<!-- ** Please select "Allow edits from maintainers" in the PR Options
** -->

## Motivation

close #326

crates/rpc-types-engine/Cargo.toml

@@ -18,7 +18,6 @@ workspace = true
 # Workspace
 op-alloy-consensus.workspace = true
 op-alloy-protocol.workspace = true
-op-alloy-genesis.workspace = true
 
 # Alloy
 alloy-primitives.workspace = true

crates/rpc-types-engine/src/lib.rs

@@ -9,8 +9,7 @@
 
 extern crate alloc;
 
-mod versions;
-pub use versions::ForkchoiceUpdateVersion;
+pub use alloy_rpc_types_engine::ForkchoiceUpdateVersion;
 
 mod attributes;
 pub use attributes::{OpAttributesWithParent, OpPayloadAttributes};