fix(ble_log): handle scheduler-suspended state in ble_log_rt_queue_trans

During light sleep transitions, the FreeRTOS scheduler is suspended but
xPortInIsrContext() returns false, causing xQueueSend with portMAX_DELAY
to hit a configASSERT. Add a check for taskSCHEDULER_SUSPENDED and use
a non-blocking send with rollback on queue-full to avoid resource leaks.

components/bt/common/ble_log/src/ble_log_rt.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2025-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -185,8 +185,15 @@ BLE_LOG_IRAM_ATTR void ble_log_rt_queue_trans(ble_log_prph_trans_t **trans)
 
     if (BLE_LOG_IN_ISR()) {
         BaseType_t woken = pdFALSE;
+        /* Queue depth == total transport buffer count; queue-full is impossible
+         * for a valid transport, so the return value is not checked. */
         xQueueSendFromISR(rt_queue_handle, trans, &woken);
         portYIELD_FROM_ISR(woken);
+    } else if (xTaskGetSchedulerState() == taskSCHEDULER_SUSPENDED) {
+        /* Non-blocking send to avoid configASSERT when scheduler is suspended
+         * (e.g., during light sleep transitions). Queue-full is impossible;
+         * see comment above. */
+        xQueueSend(rt_queue_handle, trans, 0);
     } else {
         xQueueSend(rt_queue_handle, trans, portMAX_DELAY);
     }