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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 (pending + starting + stopping + stopped == 0) {
                
                newState = DeployState.STARTED;
            } else if (pending + starting > 0) {
                
                newState = DeployState.STARTING;
            } else if (stopping + stopped > 0) {
                newState = DeployState.STOPPING;
            }
        } else if (starting > 0) {
            
            newState = DeployState.STARTING;
        } else if (pending > 0) {
            if (starting + starting + stopping + stopped == 0) {
                
                newState = DeployState.PENDING;
            } else if (stopping + stopped > 0) {
                
                newState = DeployState.STOPPING;
            }
        } else if (stopping > 0) {
            
            newState = DeployState.STOPPING;
        } else if (stopped > 0) {
            
            newState = DeployState.STOPPED;
        }
        return newState;
    }
    private void exportMetadataService() {