Limit postgres database concurrency (#17246)

Content.Server/Database/ServerDbSqlite.cs

@@ -20,22 +20,21 @@ namespace Content.Server.Database
     {
         private readonly Func<DbContextOptions<SqliteServerDbContext>> _options;
 
-        // This doesn't allow concurrent access so that's what the semaphore is for.
-        // That said, this is bloody SQLite, I don't even think EFCore bothers to truly async it.
         private readonly SemaphoreSlim _prefsSemaphore;
 
         private readonly Task _dbReadyTask;
 
         private int _msDelay;
 
-        public ServerDbSqlite(Func<DbContextOptions<SqliteServerDbContext>> options, bool inMemory)
+        public ServerDbSqlite(
+            Func<DbContextOptions<SqliteServerDbContext>> options,
+            bool inMemory,
+            IConfigurationManager cfg)
         {
             _options = options;
 
             var prefsCtx = new SqliteServerDbContext(options());
 
-            var cfg = IoCManager.Resolve<IConfigurationManager>();
-
             // When inMemory we re-use the same connection, so we can't have any concurrency.
             var concurrency = inMemory ? 1 : cfg.GetCVar(CCVars.DatabaseSqliteConcurrency);
             _prefsSemaphore = new SemaphoreSlim(concurrency, concurrency);