feat: add 'group created instructions' as info message (#4916)

Before, it was shown by UI when the chat is empty, however, in case of
verified groups, this is never the case any longer as the 'e2ee now
guaranteed' is always added.

python/tests/test_2_increation.py

@@ -26,7 +26,7 @@ def wait_msgs_changed(account, msgs_list):
                     break
         else:
             account.log(f"waiting mismatch data1={data1} data2={data2}")
-    return ev.data1, ev.data2
+    return ev.data2
 
 
 class TestOnlineInCreation:
@@ -71,11 +71,11 @@ class TestOnlineInCreation:
         lp.sec("forward the message while still in creation")
         chat2 = ac1.create_group_chat("newgroup")
         chat2.add_contact(ac2)
-        wait_msgs_changed(ac1, [(0, 0)])  # why not chat id?
+        ac1._evtracker.consume_events()
         ac1.forward_messages([prepared_original], chat2)
         # XXX there might be two EVENT_MSGS_CHANGED and only one of them
         # is the one caused by forwarding
-        _, forwarded_id = wait_msgs_changed(ac1, [(chat2.id, None)])
+        forwarded_id = wait_msgs_changed(ac1, [(chat2.id, None)])
         forwarded_msg = ac1.get_message_by_id(forwarded_id)
         assert forwarded_msg.is_out_preparing()