Merge pull request #20967 from wordpress-mobile/issue/20859-crash

Fix crash in PluginBrowserViewModel

Author: irfano

WordPress/src/main/java/org/wordpress/android/ui/reader/ReaderFragment.kt

@@ -396,6 +396,9 @@ class ReaderFragment : Fragment(R.layout.reader_fragment_layout), ScrollableView
     }
 
     fun requestBookmarkTab() {
+        if (!::viewModel.isInitialized) {
+            viewModel = ViewModelProvider(this@ReaderFragment, viewModelFactory)[ReaderViewModel::class.java]
+        }
         viewModel.bookmarkTabRequested()
     }