tests: 2-arg notify fakes in test_arq_ladder

Follow-up to the dialed-SSID callback change (notify_connected/notify_
pending now carry the local call).  test_arq_ladder.c is created on this
branch by the data-plane rewrite, so the mercuryv2 SSID fix could not
update its FFF fakes during the rebase; bring them to the 2-arg signature
so the branch builds.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: rafael2k

tests/datalink_arq/test_arq_ladder.c

@@ -29,8 +29,8 @@ extern void mock_set_uptime_ms(uint64_t ms);
 
 FAKE_VOID_FUNC(fake_send_tx_frame, int, int, size_t, const uint8_t *, int);
 FAKE_VOID_FUNC(fake_send_pattern_ack, int, int);
-FAKE_VOID_FUNC(fake_notify_connected, const char *);
-FAKE_VOID_FUNC(fake_notify_pending, const char *);
+FAKE_VOID_FUNC(fake_notify_connected, const char *, const char *);
+FAKE_VOID_FUNC(fake_notify_pending, const char *, const char *);
 FAKE_VOID_FUNC(fake_notify_cancelpending);
 FAKE_VOID_FUNC(fake_notify_disconnected, bool);
 FAKE_VOID_FUNC(fake_deliver_rx_data, const uint8_t *, size_t);