Fix different dates being used when saving attachments.

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationFragment.java

@@ -1055,7 +1055,7 @@ public class ConversationFragment extends LoggingFragment implements Multiselect
   private void performSave(final MediaMmsMessageRecord message) {
     List<SaveAttachmentTask.Attachment> attachments = Stream.of(message.getSlideDeck().getSlides())
                                                             .filter(s -> s.getUri() != null && (s.hasImage() || s.hasVideo() || s.hasAudio() || s.hasDocument()))
-                                                            .map(s -> new SaveAttachmentTask.Attachment(s.getUri(), s.getContentType(), message.getDateReceived(), s.getFileName().orNull()))
+                                                            .map(s -> new SaveAttachmentTask.Attachment(s.getUri(), s.getContentType(), message.getDateSent(), s.getFileName().orNull()))
                                                             .toList();
 
     if (!Util.isEmpty(attachments)) {

app/src/main/java/org/thoughtcrime/securesms/stories/dialogs/StoryContextMenu.kt

@@ -51,7 +51,7 @@ object StoryContextMenu {
     val saveAttachment = SaveAttachmentTask.Attachment(
       uri,
       contentType,
-      System.currentTimeMillis(),
+      mediaMessageRecord.dateSent,
       null
     )