messageActionSheet: Remove "edit","delete" option if time limit exceeds.

Currently in zulip web app when edit/delete time limit
exceeds, edit/delete option button is removed.

Handle this feature in mobile version too, like this:

1.If it is "Private messages" narrow remove the buttons.
2.If it is "Topic or Stream messages" narrow keep edit
  button for editing of topic names, remove delete button.

Fixes: zulip#2792,zulip#2793
Signed-off-by: rajprakash00 <rajprakash1999@gmail.com>

src/message/messageActionSheet.js

@@ -269,6 +269,8 @@ export const constructMessageActionButtons = ({
   narrow: Narrow,
 }): Button<MessageArgs>[] => {
   const buttons = [];
+  const updateMessageTimeLimit = Math.floor((Date.now() / 1000 - message.timestamp) / 60);
+
   if (messageNotDeleted(message)) {
     buttons.push(addReaction);
   }
@@ -285,11 +287,19 @@ export const constructMessageActionButtons = ({
   if (
     message.sender_id === ownUser.user_id
     // Our "edit message" UI only works in certain kinds of narrows.
-    && (isStreamOrTopicNarrow(narrow) || isPmNarrow(narrow))
+    && (isStreamOrTopicNarrow(narrow)
+      || (isPmNarrow(narrow)
+        // if "edit message" time limit exceeds , don't show the edit option button
+        && updateMessageTimeLimit < 60))
   ) {
     buttons.push(editMessage);
   }
-  if (message.sender_id === ownUser.user_id && messageNotDeleted(message)) {
+  if (
+    message.sender_id === ownUser.user_id
+    && messageNotDeleted(message)
+    // if "delete message" time limit exceeds , don't show the delete option button
+    && updateMessageTimeLimit < 60
+  ) {
     buttons.push(deleteMessage);
   }
   if (message.id in flags.starred) {