Micro Ros Agent if not configured properly or left with default value, code execution will stop without much debug info.

还没有人认领这个 Issue。

- Hardware description: Doit ESP32 Dev Kit
- RTOS: Simple publisher int32 example.
- Installation type: micro_ros_setup
- Version or commit hash: jazzy

#### Steps to reproduce the issue

- Clone this repo.
- Source the terminal using export.sh and then go to the Int32_publisher example.
- Do idf.py build flash monitor.(Make sure esp32 is connected while doing so).
- I delibrately left the idf.py menuconfig step.
- Once, flashed, you'll see notice that program gets aborted indicating the line at which issue occured without additional info.

#### Expected behavior
The program should atleast output the default config such as ssid, password, micro-ros-agent config. Giving more context and ensuring network is intialized properly and any issue with configuration could be easily debugged.

#### Actual behavior
The program stops indicating the line where issue occured.

#### Proposed Changes:
Adding network intialization check and logging default configuration in the code.

首先，在跳过 menuconfig 后，使用 `idf.py build flash monitor` 复现 Int32_publisher 示例中的问题。检查 abort 路径以及 network 和 micro-ROS agent 配置的处理方式。完成的标准是：示例报告其配置上下文，并明确指出 network 初始化或配置失败，而不是只显示行引用后停止。

由索引模型根据 Issue 内容生成。