Improve marking vanish placeholder as used for features listening to vanish status change

shared/src/main/java/me/neznamy/tab/shared/FeatureManager.java

@@ -1,5 +1,6 @@
 package me.neznamy.tab.shared;
 
+import java.util.Collections;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import java.util.UUID;
@@ -252,6 +253,9 @@ public class FeatureManager {
         if (featureName == null || featureHandler == null) return;
         features.put(featureName, featureHandler);
         values = features.values().toArray(new TabFeature[0]);
+        if (featureHandler instanceof VanishListener) {
+            TAB.getInstance().getPlaceholderManager().addUsedPlaceholders(Collections.singletonList(TabConstants.Placeholder.VANISHED));
+        }
     }
 
     public void unregisterFeature(String featureName) {

shared/src/main/java/me/neznamy/tab/shared/features/PlayerList.java

@@ -128,7 +128,6 @@ public class PlayerList extends TabFeature implements TablistFormatManager, Join
 
     @Override
     public void load() {
-        TAB.getInstance().getPlaceholderManager().addUsedPlaceholders(Collections.singletonList(TabConstants.Placeholder.VANISHED));
         redis = (RedisSupport) TAB.getInstance().getFeatureManager().getFeature(TabConstants.Feature.REDIS_BUNGEE);
         for (TabPlayer all : TAB.getInstance().getOnlinePlayers()) {
             updateProperties(all);

shared/src/main/java/me/neznamy/tab/shared/features/alignedplayerlist/AlignedPlayerList.java

@@ -53,7 +53,6 @@ public class AlignedPlayerList extends PlayerList implements QuitListener {
 
     @Override
     public void load() {
-        TAB.getInstance().getPlaceholderManager().addUsedPlaceholders(Collections.singletonList(TabConstants.Placeholder.VANISHED));
         for (TabPlayer all : TAB.getInstance().getOnlinePlayers()) {
             updateProperties(all);
             playerViews.put(all, new PlayerView(this, all));

shared/src/main/java/me/neznamy/tab/shared/features/globalplayerlist/GlobalPlayerList.java

@@ -36,7 +36,6 @@ public class GlobalPlayerList extends TabFeature implements JoinListener, QuitLi
             TAB.getInstance().getPlaceholderManager().registerServerPlaceholder(TabConstants.Placeholder.globalPlayerListGroup(entry.getKey()), 1000,
                     () -> Arrays.stream(TAB.getInstance().getOnlinePlayers()).filter(p -> entry.getValue().contains(p.getServer()) && !p.isVanished()).count());
         }
-        TAB.getInstance().getPlaceholderManager().addUsedPlaceholders(Collections.singletonList(TabConstants.Placeholder.VANISHED));
     }
 
     @Override

shared/src/main/java/me/neznamy/tab/shared/features/layout/LayoutManager.java

@@ -42,7 +42,6 @@ public class LayoutManager extends TabFeature implements JoinListener, QuitListe
     @Override
     public void load() {
         playerList = (PlayerList) TAB.getInstance().getFeatureManager().getFeature(TabConstants.Feature.PLAYER_LIST);
-        TAB.getInstance().getPlaceholderManager().addUsedPlaceholders(Collections.singletonList(TabConstants.Placeholder.VANISHED));
         TAB.getInstance().getFeatureManager().registerFeature(TabConstants.Feature.LAYOUT_LATENCY, new LayoutLatencyRefresher(this));
         for (TabPlayer p : TAB.getInstance().getOnlinePlayers()) {
             onJoin(p);