Bluetooth: Host: Fix compiling PAwR Sync without PAST RX

The function `bt_hci_le_past_received_v2()` is not compiled
in for this configuration, so the reference needs to be removed.

Fixes #76268.

Signed-off-by: Rubin Gerritsen <rubin.gerritsen@nordicsemi.no>
(cherry picked from commit e23345b)

subsys/bluetooth/host/hci_core.c

@@ -2787,8 +2787,10 @@ static const struct event_handler meta_events[] = {
 #if defined(CONFIG_BT_PER_ADV_SYNC_RSP)
 	EVENT_HANDLER(BT_HCI_EVT_LE_PER_ADVERTISING_REPORT_V2, bt_hci_le_per_adv_report_v2,
 		      sizeof(struct bt_hci_evt_le_per_advertising_report_v2)),
+#if defined(CONFIG_BT_PER_ADV_SYNC_TRANSFER_RECEIVER)
 	EVENT_HANDLER(BT_HCI_EVT_LE_PAST_RECEIVED_V2, bt_hci_le_past_received_v2,
 		      sizeof(struct bt_hci_evt_le_past_received_v2)),
+#endif /* CONFIG_BT_PER_ADV_SYNC_TRANSFER_RECEIVER */
 	EVENT_HANDLER(BT_HCI_EVT_LE_PER_ADV_SYNC_ESTABLISHED_V2,
 		      bt_hci_le_per_adv_sync_established_v2,
 		      sizeof(struct bt_hci_evt_le_per_adv_sync_established_v2)),