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- [ ] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository and believe that this is not a duplicate.

## Describe the proposal
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EN:
Observability task, optimizing thread pool index embedding function
1 Need to specify a name for the core thread pool
2 Core thread pool index is not effective
3. Remove the frame-level indicators and only keep the core monitoring indicators (the frame-level code type is completely deleted and will be considered later)

可观测性任务，优化线程池指标埋点功能
1需要为核心线程池指定名称
2核心线程池指标生效问题
3移除框架层指标只保留核心监控指标
logger.info(getIdentifier() + " is stopping.");
            }
        } finally {
            completeStartFuture(false);
        }
    }
    private void onStopped() {
        try {
            if (isStopped()) {
                return;
            }
            setStopped();
            if (logger.isInfoEnabled()) {
                logger.info(getIdentifier() + " has stopped.");
            }
        } finally {
            completeStartFuture(false);
        }
    }
    private void onFailed(String msg, Throwable ex) {
        try {
            setFailed(ex);
            logger.error(CONFIG_FAILED_START_MODEL, "", "", msg, ex);
        } finally {
            completeStartFuture(false);
        }
    }
    private void destroyExecutorRepository() {
        
        executorRepository.shutdownServiceExportExecutor();