refactor: expose JournalLoadError from load_account_mut_skip_cold_load
Changes the return type of load_account_mut_skip_cold_load from
Result<StateLoad<...>, DB::Error> to Result<StateLoad<...>, JournalLoadError<DB::Error>>,
allowing callers to distinguish between account load failures and database errors.
This provides more context about the failure reason while maintaining type safety.
ci: exclude revm-ee-tests from semver checks and releases
Internal test fixture crate, not published to crates.io.
Co-Authored-By: Emma Jamieson-Hoare <21029500+emmajam@users.noreply.github.com>