fix: drop the "Reserved for 3GPP" event-name cross-reference (v3.6.22)

The event list tables carried labels like
"12  Reserved for 3GPP - Network rejection (TS 31.111 7.5.2)".  The phrase is
an ETSI-to-3GPP document pointer, not a usage restriction, and it is not
what a user needs - the event name is.

- EVENT_NAMES (PWA + server mirror): the 3GPP-assigned codings carry their
  plain TS 31.111 7.5 name ((I-)WLAN access status, Network rejection, CSG
  cell selection, IMS registration, Incoming IMS data, Data connection
  status change, CAG cell selection, Slices status change).
- 0x20-0x22: "Reserved (future usage)" (no attribution).
- 0x0B/0x14: the spec's full "(single access technology)" / "(multiple
  access technologies)" wording instead of the cryptic "(single)/(multiple)".
- tests pin the exact names and that no name contains the cross-reference.

652 frontend / 500 Python green; version 3.6.22; sw simple-v295.

tests/test_proactive_names.py

@@ -36,35 +36,38 @@ class ProactiveTypeNamesTests(unittest.TestCase):
 
 class EventNamesTests(unittest.TestCase):
     """Event list names follow TS 102 223 v18.3.0 8.25; the values the CAT
-    spec leaves "Reserved for 3GPP" carry the TS 31.111 event name."""
+    spec points at 3GPP for carry their TS 31.111 7.5 event name."""
 
     def test_reassigned_values_match_the_pinned_spec(self):
         for value, name in [
-            (0x0B, 'Access technology change (single)'),
-            (0x14, 'Access technology change (multiple)'),
+            (0x0B, 'Access technology change (single access technology)'),
+            (0x14, 'Access technology change (multiple access technologies)'),
             (0x19, 'Profile container'),
             (0x1A, 'Void'),
             (0x1B, 'Secured profile container'),
             (0x1C, 'Poll interval negotiation'),
-            (0x20, 'Reserved for 3GPP (future usage)'),
+            (0x20, 'Reserved (future usage)'),
         ]:
             self.assertEqual(EVENT_NAMES[value], name, hex(value))
 
-    def test_3gpp_reserved_events_carry_their_3gpp_name(self):
-        for value, fragment, clause in [
-            (0x11, '(I-)WLAN access status', 'TS 31.111 7.5.1'),
-            (0x12, 'Network rejection', 'TS 31.111 7.5.2'),
-            (0x15, 'CSG cell selection', 'TS 31.111 7.5.3'),
-            (0x17, 'IMS registration', 'TS 31.111 7.5.21'),
-            (0x18, 'Incoming IMS data', 'TS 31.111 7.5.20'),
-            (0x1D, 'Data connection status change', 'TS 31.111 7.5.25'),
-            (0x1E, 'CAG cell selection', 'TS 31.111 7.5.26'),
-            (0x1F, 'Slices status change', 'TS 31.111 7.5.27'),
+    def test_3gpp_assigned_events_carry_their_name(self):
+        for value, name in [
+            (0x11, '(I-)WLAN access status'),
+            (0x12, 'Network rejection'),
+            (0x15, 'CSG cell selection'),
+            (0x17, 'IMS registration'),
+            (0x18, 'Incoming IMS data'),
+            (0x1D, 'Data connection status change'),
+            (0x1E, 'CAG cell selection'),
+            (0x1F, 'Slices status change'),
         ]:
-            name = EVENT_NAMES[value]
-            self.assertIn('Reserved for 3GPP', name, hex(value))
-            self.assertIn(fragment, name, hex(value))
-            self.assertIn(clause, name, hex(value))
+            self.assertEqual(EVENT_NAMES[value], name, hex(value))
+
+    def test_no_reserved_for_3gpp_wording(self):
+        # a spec cross-reference, not a usage restriction - it must never
+        # reach the user-facing names
+        for value, name in EVENT_NAMES.items():
+            self.assertNotIn('Reserved for 3GPP', name, hex(value))
 
     def test_names_are_nonempty_strings(self):
         for value, name in EVENT_NAMES.items():