Fix DbContext configuration nightmares.

Thanks to julian figuring out IDesignTimeDbContextFactory exists in #6327.

All this DbContext configuration and options setup stuff is insane. Microsoft should be absolutely ashamed for coming up with this load of garbage.

Content.Server.Database/ModelSqlite.cs

@@ -13,15 +13,12 @@ namespace Content.Server.Database
 {
     public sealed class SqliteServerDbContext : ServerDbContext
     {
-        public SqliteServerDbContext()
+        public SqliteServerDbContext(DbContextOptions<SqliteServerDbContext> options) : base(options)
         {
         }
 
         protected override void OnConfiguring(DbContextOptionsBuilder options)
         {
-            if (!InitializedWithOptions)
-                options.UseSqlite("dummy connection string");
-
             ((IDbContextOptionsBuilderInfrastructure) options).AddOrUpdateExtension(new SnakeCaseExtension());
 
             options.ConfigureWarnings(x =>
@@ -70,10 +67,6 @@ namespace Content.Server.Database
                 .HasConversion(jsonConverter);
         }
 
-        public SqliteServerDbContext(DbContextOptions<ServerDbContext> options) : base(options)
-        {
-        }
-
         private static string InetToString(IPAddress address, int mask) {
             if (address.IsIPv4MappedToIPv6)
             {