Pause story playback while saving media.

Story playback was previously paused when the context menu is opened, but resumed while saving the media.

With this change, playback will remain paused while saving media, so the user doesn't potentially miss any stories while clicking through the dialogs to save media to their device storage.

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

@@ -1198,10 +1198,12 @@ class StoryViewerPageFragment :
       },
       onSave = {
         lifecycleScope.launch {
+          viewModel.setIsSavingMedia(true)
           StoryContextMenu.save(
             host = AttachmentSaver.FragmentHost(this@StoryViewerPageFragment),
             messageRecord = it.conversationMessage.messageRecord
           )
+          viewModel.setIsSavingMedia(false)
         }
       },
       onDelete = {

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

@@ -299,6 +299,10 @@ class StoryViewerPageViewModel(
     storyViewerPlaybackStore.update { it.copy(isDisplayingPartialSendDialog = isDisplayingPartialSendDialog) }
   }
 
+  fun setIsSavingMedia(isSavingMedia: Boolean) {
+    storyViewerPlaybackStore.update { it.copy(isSavingMedia = isSavingMedia) }
+  }
+
   private fun resolveSwipeToReplyState(state: StoryViewerPageState, index: Int): StoryViewerPageState.ReplyState {
     if (index !in state.posts.indices) {
       return StoryViewerPageState.ReplyState.NONE

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

@@ -23,7 +23,8 @@ data class StoryViewerPlaybackState(
   val isUserScrollingChild: Boolean = false,
   val isUserScaling: Boolean = false,
   val isDisplayingPartialSendDialog: Boolean = false,
-  val isDisplayingRecipientBottomSheet: Boolean = false
+  val isDisplayingRecipientBottomSheet: Boolean = false,
+  val isSavingMedia: Boolean = false
 ) {
   val hideChromeImmediate: Boolean = isRunningSharedElementAnimation || isDisplayingFirstTimeNavigation
 
@@ -53,5 +54,6 @@ data class StoryViewerPlaybackState(
     isUserScaling ||
     isDisplayingHideDialog ||
     isDisplayingPartialSendDialog ||
-    isDisplayingRecipientBottomSheet
+    isDisplayingRecipientBottomSheet ||
+    isSavingMedia
 }