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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
.findAny().orElse(null);
        }
        return threadNum;
    }
    @Override
    public void destroyAll() {
        logger.info("destroying application executor repository ..");
        shutdownServiceExportExecutor();
        shutdownServiceReferExecutor();
        data.values().forEach(executors -> {
            if (executors != null) {
                executors.values().forEach(executor -> {
                    if (executor != null && !executor.isShutdown()) {
                        try {
                            ExecutorUtil.shutdownNow(executor, 100);
                        } catch (Throwable ignored) {
                            
                            logger.warn(COMMON_UNEXPECTED_EXECUTORS_SHUTDOWN, "", "", ignored.getMessage(), ignored);
                        }
                    }
                });
            }
        });
        data.clear();
    }
    private void shutdownExecutorService(ExecutorService executorService, String name) {
        try {
            executorService.shutdownNow();
        } catch (Exception e) {
            String msg = "shutdown executor service [" + name + "] failed: ";