Do not show sent checkmark for verification status changes

Fixes #6743
Closes #7041
// FREEBIE

src/org/thoughtcrime/securesms/ConversationListItem.java

@@ -207,7 +207,7 @@ public class ConversationListItem extends RelativeLayout
   }
 
   private void setStatusIcons(ThreadRecord thread) {
-    if (!thread.isOutgoing() || thread.isOutgoingCall()) {
+    if (!thread.isOutgoing() || thread.isOutgoingCall() || thread.isVerificationStatusChange()) {
       deliveryStatusIndicator.setNone();
       alertView.setNone();
     } else if (thread.isFailed()) {

src/org/thoughtcrime/securesms/database/model/DisplayRecord.java

@@ -144,6 +144,10 @@ public abstract class DisplayRecord {
     return SmsDatabase.Types.isMissedCall(type);
   }
 
+  public boolean isVerificationStatusChange() {
+    return SmsDatabase.Types.isIdentityDefault(type) || SmsDatabase.Types.isIdentityVerified(type);
+  }
+
   public int getDeliveryStatus() {
     return deliveryStatus;
   }