Fix: Prevent double destroy of Layout causing Yoga WASM memory errors

src/core/Layout.ts

@@ -42,6 +42,12 @@ export class Layout {
     /** The target PixiJS container */
     public readonly target: Container;
 
+    /**
+     * Whether this object has been destroyed. If true, the object should no longer be used.
+     * After an object is destroyed, all of its functionality is disabled and references are removed.
+     */
+    public destroyed = false;
+
     /**
      * Flag indicating if layout needs recalculation
      * @ignore
@@ -278,6 +284,9 @@ export class Layout {
     }
 
     public destroy(): void {
+        if (this.destroyed) return;
+        this.destroyed = true;
+
         this.invalidateRoot();
         this.yoga.free();
         this.target.off('added', this._onChildAdded, this);