Ensure mutable lazy values executes actions on value if set.

utils/src/main/java/com/github/weisj/darklaf/util/LazyValue.java

@@ -39,18 +39,24 @@ public class LazyValue<T> {
     }
 
     public boolean isInitialized() {
-        return supplier == null;
+        return discardSupplierOnLoad() ? supplier == null : value != null;
     }
 
     protected T load() {
         if (supplier != null) {
             T obj = supplier.get();
+            if (discardSupplierOnLoad()) {
                 supplier = null;
+            }
             return obj;
         }
         return value;
     }
 
+    protected boolean discardSupplierOnLoad() {
+        return true;
+    }
+
     protected void set(final T value) {
         this.value = value;
     }

utils/src/main/java/com/github/weisj/darklaf/util/MutableLazyValue.java

@@ -25,7 +25,6 @@ import java.util.function.Supplier;
 
 public class MutableLazyValue<T> extends LazyValue<T> {
 
-
     public MutableLazyValue(final T value) {
         super(value);
     }
@@ -37,4 +36,9 @@ public class MutableLazyValue<T> extends LazyValue<T> {
     public void set(final T value) {
         super.set(value);
     }
+
+    @Override
+    protected boolean discardSupplierOnLoad() {
+        return false;
+    }
 }