Fixes restatectl setting target nodeset size

Previously, setting target nodeset size with restatectl would tell you that "No change"
```
// intentionally empty
```

crates/types/src/logs/metadata.rs

@@ -248,9 +248,18 @@ pub struct ReplicatedLogletConfig {
 
 /// New type that enforces that the nodeset size is never larger than 128.
 #[derive(
-    Debug, Clone, Copy, derive_more::Into, serde::Serialize, serde::Deserialize, Eq, PartialEq,
+    Debug,
+    Clone,
+    Copy,
+    derive_more::Into,
+    serde::Serialize,
+    serde::Deserialize,
+    Eq,
+    PartialEq,
+    derive_more::Display,
 )]
 #[serde(try_from = "u16", into = "u16")]
+#[display("{_0}")]
 pub struct NodeSetSize(u16);
 
 impl NodeSetSize {

tools/restatectl/src/commands/cluster/config.rs

@@ -80,6 +80,13 @@ fn write_default_provider<W: fmt::Write>(
                 "Replication property",
                 config.replication_property.to_string(),
             )?;
+            write_leaf(
+                w,
+                depth,
+                true,
+                "Nodeset size",
+                config.target_nodeset_size.to_string(),
+            )?;
         }
     }
     Ok(())