[fenix] For issue https://github.com/mozilla-mobile/fenix/issues/22537 crash: BookmarkFragment is attached to a context

app/src/main/java/org/mozilla/fenix/library/bookmarks/BookmarkFragment.kt

@@ -261,10 +261,13 @@ class BookmarkFragment : LibraryPageFragment<BookmarkNode>(), UserInteractionHan
     }
 
     private suspend fun loadBookmarkNode(guid: String): BookmarkNode? = withContext(IO) {
+        // Only runs if the fragment is attached same as [runIfFragmentIsAttached]
+        context?.let {
             requireContext().bookmarkStorage
                 .getTree(guid, false)
                 ?.let { desktopFolders.withOptionalDesktopFolders(it) }
         }
+    }
 
     private suspend fun refreshBookmarks() {
         // The bookmark tree in our 'state' can be null - meaning, no bookmark tree has been selected.