Fix various notification display issues and properly support reply.

...a/org/thoughtcrime/securesms/database/MmsSmsDatabase.java

...crime/securesms/notifications/DefaultMessageNotifier.java

...e/securesms/notifications/DeleteNotificationReceiver.java

...houghtcrime/securesms/notifications/MarkReadReceiver.java

...thoughtcrime/securesms/notifications/MessageNotifier.java

...curesms/notifications/NotificationCancellationHelper.java

...ime/securesms/notifications/OptimizedMessageNotifier.java

...ghtcrime/securesms/notifications/RemoteReplyReceiver.java

...ughtcrime/securesms/notifications/v2/MessageNotifierV2.kt

...htcrime/securesms/notifications/v2/NotificationBuilder.kt

...me/securesms/notifications/v2/NotificationConversation.kt

...rime/securesms/notifications/v2/NotificationExtensions.kt

...htcrime/securesms/notifications/v2/NotificationFactory.kt

...ghtcrime/securesms/notifications/v2/NotificationItemV2.kt

...e/securesms/notifications/v2/NotificationStateProvider.kt

...htcrime/securesms/notifications/v2/NotificationStateV2.kt

...ms/preferences/widgets/NotificationPrivacyPreference.java