fix: Prevent GutenbergKit retain cycle

The memory leak likely leads to performance degradations and crashes.

Author: dcalhoun

WordPress/Classes/ViewRelated/NewGutenberg/NewGutenbergViewController.swift

@@ -113,8 +113,8 @@ class NewGutenbergViewController: UIViewController, PostEditor, PublishingEditor
     private var hasEditorStarted = false
     private var isModalDialogOpen = false
 
-    lazy var autosaver = Autosaver() {
-        self.performAutoSave()
+    lazy var autosaver = Autosaver() { [weak self] in
+        self?.performAutoSave()
     }
 
     // MARK: - Private Properties
@@ -197,6 +197,14 @@ class NewGutenbergViewController: UIViewController, PostEditor, PublishingEditor
 
     deinit {
         tearDownKeyboardObservers()
+
+        // Cancel any pending tasks
+        editorLoadingTask?.cancel()
+
+        // Clean up child view controller
+        editorViewController.willMove(toParent: nil)
+        editorViewController.view.removeFromSuperview()
+        editorViewController.removeFromParent()
     }
 
     // MARK: - Lifecycle methods