fix: propagate edge feature to reth-node-core for version output (#20998)

crates/node/core/Cargo.toml

@@ -90,6 +90,9 @@ min-info-logs = ["tracing/release_max_level_info"]
 min-debug-logs = ["tracing/release_max_level_debug"]
 min-trace-logs = ["tracing/release_max_level_trace"]
 
+# Marker feature for edge/unstable builds - captured by vergen in build.rs
+edge = []
+
 [build-dependencies]
 vergen = { workspace = true, features = ["build", "cargo", "emit_and_set"] }
 vergen-git2.workspace = true