fix: Fixes sending packets and sidesteps a major issue with stackalloc and PGO in .NET 8 (#1607)

### Summary
- Works around a sneaky edge case bug in the JIT with stackalloc where sometimes the buffer is not zero'd.
- Fixes SendDisplayBoatHS
- Fixes sending health bars in the `SendEverything()` logic.
- Fixes a bug in sizing for some string helper functions.

### Developer Note
We are enabled `SkipLocalsInit` - do not rely on `stackalloc` to be zero'd. To zero the buffer, use `span.Clear();`

Closes #1606

Projects/Server/Network/PacketUtilities.cs

@@ -35,24 +35,7 @@ public static class PacketUtilities
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     public static Span<byte> InitializePacket(this Span<byte> buffer)
     {
-#if NO_LOCAL_INIT
-            if (buffer != null)
-            {
-                buffer[0] = 0;
-            }
-#endif
-        return buffer;
-    }
-
-    [MethodImpl(MethodImplOptions.AggressiveInlining)]
-    public static Span<byte> InitializePackets(this Span<byte> buffer, int width)
-    {
-#if NO_LOCAL_INIT
-            for (var i = 0; i < buffer.Length; i += width)
-            {
-                buffer[i] = 0;
-            }
-#endif
+        buffer[0] = 0;
         return buffer;
     }
 }