Revert "core/rawdb: remove unused transition status state accessors (#30433)"

This reverts commit ae707445f5.

core/rawdb/accessors_metadata.go

@@ -174,3 +174,16 @@ func UpdateUncleanShutdownMarker(db ethdb.KeyValueStore) {
 		log.Warn("Failed to write unclean-shutdown marker", "err", err)
 	}
 }
+
+// ReadTransitionStatus retrieves the eth2 transition status from the database
+func ReadTransitionStatus(db ethdb.KeyValueReader) []byte {
+	data, _ := db.Get(transitionStatusKey)
+	return data
+}
+
+// WriteTransitionStatus stores the eth2 transition status to the database
+func WriteTransitionStatus(db ethdb.KeyValueWriter, data []byte) {
+	if err := db.Put(transitionStatusKey, data); err != nil {
+		log.Crit("Failed to store the eth2 transition status", "err", err)
+	}
+}