Do not allow loading state to prevent crossfader from transitioning.

app/src/main/java/org/thoughtcrime/securesms/stories/viewer/page/StoryViewerPageFragment.kt

@@ -699,10 +699,12 @@ class StoryViewerPageFragment :
       }
       AttachmentDatabase.TRANSFER_PROGRESS_PENDING -> {
         storySlate.moveToState(StorySlateView.State.LOADING, post.id)
+        sharedViewModel.setContentIsReady()
         viewModel.setIsDisplayingSlate(true)
       }
       AttachmentDatabase.TRANSFER_PROGRESS_STARTED -> {
         storySlate.moveToState(StorySlateView.State.LOADING, post.id)
+        sharedViewModel.setContentIsReady()
         viewModel.setIsDisplayingSlate(true)
       }
       AttachmentDatabase.TRANSFER_PROGRESS_FAILED -> {