fix: SpriteManager Race Conditions BZ (#452)

* Fixed SpriteManager race conditions

* Removed redundant usings

* Why did I remove this lol

Nautilus/Initializer.cs

@@ -4,6 +4,9 @@
 using Nautilus.Patchers;
 using Nautilus.Utility;
 using UnityEngine;
+#if BELOWZERO
+using UnityEngine.U2D;
+#endif
 
 namespace Nautilus;
 
@@ -16,6 +19,16 @@ public class Initializer : BaseUnityPlugin
 {
     private static readonly Harmony _harmony = new(PluginInfo.PLUGIN_GUID);
 
+#if BELOWZERO
+    static Initializer()
+    {
+        var handle = AddressablesUtility.LoadAllAsync<SpriteAtlas>("SpriteAtlases");
+        handle.Completed += SpriteManager.OnLoadedSpriteAtlases;
+        // Please dont use this method. I hate using it but we have no other choice.
+        _ = handle.WaitForCompletion();
+    }
+#endif
+
     /// <summary>
     /// WARNING: This method is for use only by BepInEx.
     /// </summary>