feat(firehose): port FirehoseLiveHooks to release/reth-2.x

[panos-xyz]

Ports FirehoseLiveHooks from release/base-2.x (511a2bb) to release/reth-2.x.

On reth-v2.5.2-fh3.1, execute_and_trace_block wraps the live executor with FirehoseWrappedExecutor::new, so a chain's PreTxAdjust / PostTxExtras only run on the staged-sync path (through ChainHooks). Blocks imported through the engine API are traced without them. Chains that consume the generic line and customize fee handling need the hooks on both paths; we hit this while integrating Morph (morph-reth, built on upstream reth v2.5.2).

The commit is a cherry-pick of 511a2bb. The only conflict was the doc comment of execute_and_trace_block, where the JIT paragraph of release/reth-2.x is kept. As on release/base-2.x, the live path now takes a StateProviderBox, since the hooks are typed against LiveTracedEvm.

This is the first of four PRs needed by the Morph integration: #36 (post-tx gas accounting, stacked on this one), #37 (undefined SELFDESTRUCT) and #38 (Executor::execute re-emitting blocks).

Testing

• On this branch: cargo test -p reth-firehose --lib, cargo test -p reth-firehose-tests.
• On the stack of all four PRs: cargo test -p reth-engine-tree --test firehose_live_tracing, cargo check -p reth-bb -p example-custom-beacon-withdrawals -p example-custom-state-root.
• morph-reth implements the hooks and its Firehose integration tests pass against the stack, including blocks imported through the engine API.

https://claude.ai/code/session_017NVMdn2RC1Nv5tfSTCkvro