Add various backup fixes for polls.

app/src/androidTest/java/org/thoughtcrime/securesms/backup/v2/ArchiveImportExportTests.kt

@@ -211,6 +211,11 @@ class ArchiveImportExportTests {
     runTests { it.startsWith("chat_item_view_once_") }
   }
 
+//  @Test
+  fun chatItemPoll() {
+    runTests { it.startsWith("chat_item_poll_") }
+  }
+
 //  @Test
   fun notificationProfiles() {
     runTests { it.startsWith("notification_profile_") }