fix(core): Fixes map issues at New Haven (#509)

- [X] Fixes map issues at New Haven by turning off static diffs
- [X] Some code cleanup and reformatting of tile matrix, tile matrix patch, and tile data
- [X] Adds NetState.Flush for generating spawners so it doesn't feel like the server is frozen
- [X] Reverts NativeReader changes from a while back.
- [X] Adds more string reading for BufferReader.


Notes:
BufferReader is still `little endian` compared to `SpanReader` which is `big endian` (for packets). To that end, the RunUO deserialization `ReadString()` was made obsolete since it is ambiguous, and contains extra fields other than simply reading a string. Furthermore, we shouldn't be using UTF8 (for now) since it is slow.

Projects/UOContent/Engines/Spawners/GenerateSpawners.cs

@@ -5,6 +5,7 @@ using System.IO;
 using System.Linq;
 using System.Text.Json;
 using Server.Json;
+using Server.Network;
 using Server.Utilities;
 
 namespace Server.Engines.Spawners
@@ -43,6 +44,8 @@ namespace Server.Engines.Spawners
                 var file = files[i];
                 from.SendMessage("GenerateSpawners: Generating spawners for {0}...", file.Name);
 
+                NetState.FlushAll();
+
                 try
                 {
                     var spawners = JsonConfig.Deserialize<List<DynamicJson>>(file.FullName);

Projects/UOContent/Spells/Base/SpellHelper.cs

@@ -259,7 +259,7 @@ namespace Server.Spells
             return false;
         }
 
-        public static bool CanRevealCaster(Mobile m) => m is BaseCreature c && !c.Controlled;
+        public static bool CanRevealCaster(Mobile m) => m is BaseCreature { Controlled: false };
 
         public static void GetSurfaceTop(ref IPoint3D p)
         {