fix: don't use enhanced switch

this language feature is not available in 1.3

Author: lenaschoenburg

atomix/cluster/src/main/java/io/atomix/raft/impl/RaftContext.java

@@ -477,12 +477,17 @@ public void addSnapshotReplicationListener(
           // Notify listener immediately if it registered during an ongoing replication.
           // This is to prevent missing necessary state transitions.
           switch (missedSnapshotReplicationEvents) {
-            case STARTED -> snapshotReplicationListener.onSnapshotReplicationStarted();
-            case COMPLETED -> {
+            case STARTED:
               snapshotReplicationListener.onSnapshotReplicationStarted();
-              snapshotReplicationListener.onSnapshotReplicationCompleted(term);
-            }
-            default -> {}
+              break;
+            case COMPLETED:
+              {
+                snapshotReplicationListener.onSnapshotReplicationStarted();
+                snapshotReplicationListener.onSnapshotReplicationCompleted(term);
+                break;
+              }
+            default:
+              break;
           }
         });
   }