Do not send typing indicators in Note to Self.

Fixes #10988

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

@@ -3246,7 +3246,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
 
     @Override
     public void onTextChanged(String text) {
-      if (enabled && threadId > 0 && isSecureText && !isSmsForced() && !recipient.get().isBlocked()) {
+      if (enabled && threadId > 0 && isSecureText && !isSmsForced() && !recipient.get().isBlocked() && !recipient.get().isSelf()) {
         TypingStatusSender typingStatusSender = ApplicationDependencies.getTypingStatusSender();
 
         if (text.length() == 0) {