fix(tests): complete migration to content-based stubbing in functional tests

tests/functionaltests/test_receipts.c

@@ -30,8 +30,9 @@ send_receipt_request(void **state)
 
     prof_connect();
 
-    stbbr_for_id("prof_caps_4",
-        "<iq from='buddy1@localhost/laptop' to='stabber@localhost' id='prof_caps_4' type='result'>"
+    // Register disco#info response for capabilities query (receipts support)
+    stbbr_for_query("http://jabber.org/protocol/disco#info",
+        "<iq from='buddy1@localhost/laptop' to='stabber@localhost' id='*' type='result'>"
             "<query xmlns='http://jabber.org/protocol/disco#info' node='http://profanity-im.github.io#hAkb1xZdJV9BQpgGNw8zG5Xsals='>"
                 "<identity category='client' name='Profanity 0.5.0' type='console'/>"
                 "<feature var='urn:xmpp:receipts'/>"