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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
if (!isStarting()) {
            return;
        }
        for (DeployListener<ApplicationModel> listener : listeners) {
            try {
                if (listener instanceof ApplicationDeployListener) {
                    ((ApplicationDeployListener) listener).onModuleStarted(applicationModel);
                }
            } catch (Throwable e) {
                logger.error(CONFIG_FAILED_START_MODEL, "", "", getIdentifier() + " an exception occurred when handle starting event", e);
            }
        }
    }
    private void onStarting() {
        
        
        if (!(isPending() || isStarted())) {
            return;
        }
        setStarting();
        startFuture = new CompletableFuture();
        if (logger.isInfoEnabled()) {
            logger.info(getIdentifier() + " is starting.");
        }
    }
    private void onStarted() {
        try {
            
            if (!isStarting()) {
                return;