Emit deprecation warning for variable size predictor

With this commit we mark the following settings as deprecated:

* http.netty.receive_predictor_min
* http.netty.receive_predictor_max

The settings infrastructure then emits a deprecation warning upon startup if
these settings are configured.

Relates #26165

modules/transport-netty4/src/main/java/org/elasticsearch/http/netty4/Netty4HttpServerTransport.java

@@ -138,14 +138,16 @@ public class Netty4HttpServerTransport extends AbstractLifecycleComponent implem
      */
     @Deprecated
     public static final Setting<ByteSizeValue> SETTING_HTTP_NETTY_RECEIVE_PREDICTOR_MIN =
-        byteSizeSetting("http.netty.receive_predictor_min", SETTING_HTTP_NETTY_RECEIVE_PREDICTOR_SIZE, Property.NodeScope);
+        byteSizeSetting("http.netty.receive_predictor_min", SETTING_HTTP_NETTY_RECEIVE_PREDICTOR_SIZE,
+            Property.NodeScope, Property.Deprecated);
 
     /**
      * @deprecated This (undocumented) setting is deprecated to reduce complexity and is removed in 7.0. See #26165 for details.
      */
     @Deprecated
     public static final Setting<ByteSizeValue> SETTING_HTTP_NETTY_RECEIVE_PREDICTOR_MAX =
-        byteSizeSetting("http.netty.receive_predictor_max", SETTING_HTTP_NETTY_RECEIVE_PREDICTOR_SIZE, Property.NodeScope);
+        byteSizeSetting("http.netty.receive_predictor_max", SETTING_HTTP_NETTY_RECEIVE_PREDICTOR_SIZE,
+            Property.NodeScope, Property.Deprecated);
 
 
     protected final NetworkService networkService;