Core/Players: Fixed CharacterCache by-name storage holding data for deleted characters

Port From (https://github.com/TrinityCore/TrinityCore/commit/d03e0d69353852636e12911a7f7149cb0bca40ef)

Source/Game/Cache/CharacterCache.cs

@@ -51,6 +51,7 @@ namespace Game.Cache
             data.IsDeleted = isDeleted;
 
             // Fill Name to Guid Store
+            if (!isDeleted)
                 _characterCacheByNameStore[name] = data;
             _characterCacheStore[guid] = data;
         }
@@ -125,14 +126,18 @@ namespace Game.Cache
             _characterCacheStore[guid].ArenaTeamId[slot] = arenaTeamId;
         }
 
-        public void UpdateCharacterInfoDeleted(ObjectGuid guid, bool deleted, string name = null)
+        public void UpdateCharacterInfoDeleted(ObjectGuid guid, bool deleted, string name)
         {
-            if (!_characterCacheStore.ContainsKey(guid))
+            if (!_characterCacheStore.TryGetValue(guid, out var cacheEntry))
                 return;
 
-            _characterCacheStore[guid].IsDeleted = deleted;
-            if (!name.IsEmpty())
+            if (deleted)
+                _characterCacheByNameStore.Remove(cacheEntry.Name);
+            else
+                _characterCacheByNameStore[name] = cacheEntry;
+
             _characterCacheStore[guid].Name = name;
+            _characterCacheStore[guid].IsDeleted = deleted;
         }
 
         public bool HasCharacterCacheEntry(ObjectGuid guid)

Source/Game/Entities/Player/Player.DB.cs

@@ -4521,7 +4521,7 @@ namespace Game.Entities
                     stmt.AddValue(0, guid);
                     trans.Append(stmt);
 
-                    Global.CharacterCacheStorage.UpdateCharacterInfoDeleted(playerGuid, true);
+                    Global.CharacterCacheStorage.UpdateCharacterInfoDeleted(playerGuid, true, "");
                     break;
                 }
                 default: