chore: Update from .NET 7 preview to release. (#1234)

Projects/Server/ExpansionInfo.cs

@@ -191,6 +191,11 @@ public class ExpansionInfo
     static ExpansionInfo()
     {
         var path = Path.Combine(Core.BaseDirectory, "Data/expansion.json");
+        if (!File.Exists(path))
+        {
+            throw new FileNotFoundException($"Expansion file '{path}' could not be found.");
+        }
+
         var expansions = JsonConfig.Deserialize<List<ExpansionConfig>>(path);
 
         Table = new ExpansionInfo[expansions.Count];

Projects/Server/Server.csproj

@@ -7,7 +7,6 @@
         <AssemblyName>ModernUO</AssemblyName>
         <Win32Resource />
         <Product>ModernUO Server</Product>
-        <PublishDir>..\..\Distribution</PublishDir>
         <OutDir>..\..\Distribution</OutDir>
         <Version>0.0.0</Version>
     </PropertyGroup>
@@ -43,7 +42,4 @@
     <ItemGroup>
         <AdditionalFiles Include="Migrations/*.v*.json" />
     </ItemGroup>
-    <ItemGroup>
-      <Folder Include="Assistants" />
-    </ItemGroup>
 </Project>