Sync provider registry

Signed-off-by: HellFirePvP <7419378+HellFirePvP@users.noreply.github.com>

Author: HellFirePvP

src/main/java/hellfirepvp/observerlib/common/registry/RegistryProviders.java

@@ -21,7 +21,7 @@
 public class RegistryProviders {
 
     public static final ResourceKey<Registry<ObserverProvider<?>>> REGISTRY_KEY = ResourceKey.createRegistryKey(ObserverLib.key("observer_providers"));
-    private static final Registry<ObserverProvider<?>> REGISTRY = new RegistryBuilder<>(REGISTRY_KEY).create();
+    private static final Registry<ObserverProvider<?>> REGISTRY = new RegistryBuilder<>(REGISTRY_KEY).sync(true).create();
 
     public static void initialize(NewRegistryEvent event) {
         event.register(REGISTRY);