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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
.filter(m -> Objects.isNull(m.getAddress()))
            .collect(Collectors.toList());
        if (metadataConfigsToOverride.size() > 1) {
            return;
        }
        MetadataReportConfig metadataConfigToOverride = metadataConfigsToOverride.stream().findFirst().orElse(null);
        List<RegistryConfig> defaultRegistries = configManager.getDefaultRegistries();
        if (!defaultRegistries.isEmpty()) {
            defaultRegistries
                .stream()
                .filter(this::isUsedRegistryAsMetadataCenter)
                .map(registryConfig -> registryAsMetadataCenter(registryConfig, metadataConfigToOverride))
                .forEach(metadataReportConfig -> {
                    overrideMetadataReportConfig(metadataConfigToOverride, metadataReportConfig);
                });
        }
    }
    private void overrideMetadataReportConfig(MetadataReportConfig metadataConfigToOverride, MetadataReportConfig metadataReportConfig) {
        if (metadataReportConfig.getId() == null) {
            Collection<MetadataReportConfig> metadataReportConfigs = configManager.getMetadataConfigs();
            if (CollectionUtils.isNotEmpty(metadataReportConfigs)) {
                for (MetadataReportConfig existedConfig : metadataReportConfigs) {
                    if (existedConfig.getId() == null && existedConfig.getAddress().equals(metadataReportConfig.getAddress())) {
                        return;
                    }
                }
            }
            configManager.removeConfig(metadataConfigToOverride);
            configManager.addMetadataReport(metadataReportConfig);
        } else {