微服务启动失败 -- NullPointer问题

2.6.0版本，微服务在启动的时候，偶现微服务启动失败，错误日志中显示是由空指针引起的
错误日志如下
```
[2023-11-02 18:38:10.376+08:00] [INFO] [AuditLogReportTask]-[] [] | o.a.s.f.common.utils.SPIServiceUtils Found SPI service org.apache.servicecomb.core.ConsumerProvider, count=0.
[2023-11-02 18:38:10.375+08:00] [INFO] [main]-[] [] | c.h.g.notice.config.LogLevelMonitor change loglevel to [DEBUG] end
[2023-11-02 18:38:10.378+08:00] [INFO] [main]-[] [] | c.h.g.notice.config.LogLevelMonitor start to rollBack loglevel
Nov 02, 2023 6:38:12 PM org.apache.catalina.util.SessionIdGeneratorBase createSecureRandom
WARNING: Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [101] milliseconds.
[2023-11-02 18:38:12.973+08:00] [WARN] [AuditLogReportTask]-[] [] | com.huawei.gts.operlog.LogReportTask The current registration for CSE service has not been completed, cse status: DOWN
[2023-11-02 18:38:16.120+08:00] [ERROR] [main]-[] [] | o.s.boot.SpringApplication Application run failed
java.lang.NullPointerException:
at org.apache.servicecomb.core.CseApplicationListener.onApplicationEvent(CseApplicationListener.java:90)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:421)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:378)
at org.springframework.boot.context.event.EventPublishingRunListener.ready(EventPublishingRunListener.java:114)
at org.springframework.boot.SpringApplicationRunListeners.lambda$ready$6(SpringApplicationRunListeners.java:82)
at java.util.ArrayList.forEach(ArrayList.java:1259)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:120)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:114)
at org.springframework.boot.SpringApplicationRunListeners.ready(SpringApplicationRunListeners.java:82)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:322)
at com.huawei.gts.notice.NoticeServiceApplication.main(NoticeServiceApplication.java:65)
```
单纯从代码中看，是在CSEApplicationListener中的 scbEngine.getProducerProviderManager().getProducerProviderList()可能出现了空指针，请问这块是否可以做一下加固？

Comienza leyendo CseApplicationListener.java en la línea 90 y sigue la ruta de inicio que se muestra en el stack trace, especialmente alrededor del estado CSE DOWN registrado. La tarea estará terminada cuando la ruta de inicio del microservicio ya no falle con esta NullPointerException y el estado nulo sospechado esté cubierto mediante una verificación.

Escrito por el modelo de indexación a partir del texto del issue.