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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
cc.setScopeModel(applicationModel);
        if (cc.getParameters() == null) {
            cc.setParameters(new HashMap<>());
        }
        if (CollectionUtils.isNotEmptyMap(registryConfig.getParameters())) {
            cc.getParameters().putAll(registryConfig.getParameters()); 
        }
        cc.getParameters().put(CLIENT_KEY, registryConfig.getClient());
        cc.setProtocol(protocol);
        cc.setPort(port);
        if (StringUtils.isNotEmpty(registryConfig.getGroup())) {
            cc.setGroup(registryConfig.getGroup());
        }
        cc.setAddress(getRegistryCompatibleAddress(registryConfig));
        cc.setNamespace(registryConfig.getGroup());
        cc.setUsername(registryConfig.getUsername());
        cc.setPassword(registryConfig.getPassword());
        if (registryConfig.getTimeout() != null) {
            cc.setTimeout(registryConfig.getTimeout().longValue());
        }
        cc.setHighestPriority(false);
        return cc;
    }
    private void useRegistryAsMetadataCenterIfNecessary() {
        Collection<MetadataReportConfig> originMetadataConfigs = configManager.getMetadataConfigs();
        if (originMetadataConfigs.stream().anyMatch(m -> Objects.nonNull(m.getAddress()))) {
            return;
        }
        Collection<MetadataReportConfig> metadataConfigsToOverride = originMetadataConfigs
            .stream()