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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
<!-- Please use this for a concrete design proposal for functionality. -->
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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
}
    @Override
    public void prepareApplicationInstance() {
        if (hasPreparedApplicationInstance.get()) {
            return;
        }
        
        exportMetricsService();
        if (isRegisterConsumerInstance()) {
            exportMetadataService();
            if (hasPreparedApplicationInstance.compareAndSet(false, true)) {
                
                registerServiceInstance();
            }
        }
    }
    public void prepareInternalModule() {
        if (hasPreparedInternalModule) {
            return;
        }
        synchronized (internalModuleLock) {
            if (hasPreparedInternalModule) {
                return;
            }
            
            ModuleDeployer internalModuleDeployer = applicationModel.getInternalModule().getDeployer();
            if (!internalModuleDeployer.isStarted()) {
                Future future = internalModuleDeployer.start();
                
                try {