Change label of reply button from "Publish" to "Reply"

**phab**: https://phabricator.wikimedia.org/T334356

app/src/main/res/layout/activity_talk_reply.xml

@@ -82,7 +82,7 @@
             android:layout_marginStart="8dp"
             android:layout_marginEnd="4dp"
             android:fontFamily="sans-serif-medium"
-            android:text="@string/description_edit_save"
+            android:text="@string/talk_reply_save"
             android:textColor="?attr/progressive_color"/>
 
     </androidx.appcompat.widget.Toolbar>

app/src/main/res/values-qq/strings.xml

@@ -1214,6 +1214,7 @@
   <string name="talk_page_empty_title">Title text for stating that this talk page is currently empty.</string>
   <string name="talk_page_empty_content">Content test for stating that this talk page is currently empty.</string>
   <string name="talk_add_reply">Button label for adding a reply to a talk page topic.\n\nThe functionality is similar to {{msg-mw|Discussiontools-replylink}}, so the translation can be identical.</string>
+  <string name="talk_reply_save">Button label for submitting a reply.\n\nThe functionality is similar to {{msg-mw|Discussiontools-replywidget-reply}}, so the translation can be identical.</string>
   <string name="talk_no_subject">Label for talk page topic that does not have a title.</string>
   <string name="talk_reply_subject">Hint for text field for entering a new talk page topic.</string>
   <string name="talk_reply_hint">Hint for text field for composing a reply to the current talk page topic.</string>

app/src/main/res/values/strings.xml

@@ -1269,6 +1269,7 @@
     <string name="talk_page_empty_title">The conversation starts here</string>
     <string name="talk_page_empty_content">Talk pages are where people discuss how to make Wikipedia content the best it can be. Start by adding a new discussion topic to connect and collaborate with a community of Wikipedians.</string>
     <string name="talk_add_reply">Reply</string>
+    <string name="talk_reply_save">Reply</string>
     <string name="talk_no_subject">(No subject)</string>
     <string name="talk_reply_subject">Subject</string>
     <string name="talk_reply_hint">Compose response</string>