Merge branch 'bugfix/fix_proxy_example_assert_v5.3' into 'release/v5.3'

fix(nimble): Fixed assert issue in proximity_sensor example (v5.3)

See merge request espressif/esp-idf!32626

examples/bluetooth/nimble/ble_proximity_sensor/proximity_sensor_prph/main/main.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2017-2023 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2017-2024 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -183,12 +183,14 @@ ble_prox_prph_gap_event(struct ble_gap_event *event, void *arg)
                     event->connect.status == 0 ? "established" : "failed",
                     event->connect.status);
 
-        /* resume advertising */
+        if (event->connect.status != 0) {
+        /* Connection failed, resume advertising */
 #if CONFIG_EXAMPLE_EXTENDED_ADV
-        ext_ble_prox_prph_advertise();
+            ext_ble_prox_prph_advertise();
 #else
-        ble_prox_prph_advertise();
+            ble_prox_prph_advertise();
 #endif
+        }
         break;
 
     case BLE_GAP_EVENT_DISCONNECT: