prevent an exception from happening on boot due to unmodifiable set in the config codec

pom.xml

@@ -21,7 +21,7 @@
         <maven.compiler.target>25</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <hytale.version>2026.03.26-89796e57b</hytale.version>
-        <revision>1.4.1</revision>
+        <revision>1.4.2</revision>
     </properties>
 
     <build>

src/main/java/me/youhavetrouble/quickerstacker/config/QuickerStackerConfig.java

@@ -18,7 +18,7 @@ public class QuickerStackerConfig {
             .append(new KeyedCodec<>("QuickStackInteractions", Codec.STRING_ARRAY),
                     (config, value) -> {
                         config.quickStackInteractions = value;
-                        config.quickStackInteractionSet = Collections.unmodifiableSet(new HashSet<>(Arrays.asList(config.quickStackInteractions)));
+                        config.quickStackInteractionSet = new HashSet<>(Arrays.asList(config.quickStackInteractions));
                     },
                     (config) -> config.quickStackInteractions)
             .documentation("List of interaction IDs that when detected on a block will cause QuickerStacker to attempt to add its own right click quick stack interaction. This only takes `Use` interaction type.")
@@ -28,7 +28,7 @@ public class QuickerStackerConfig {
     public QuickerStackerConfig() {}
 
     public Set<String> getQuickStackContainers() {
-        return quickStackInteractionSet;
+        return Collections.unmodifiableSet(quickStackInteractionSet);
     }
 
 }