Results 4 issues of yehuo

# leader.rs fn start let latch = self.clone(); // this step ,while LeaderLatch has field zk,zookeeper has ref self let subscription = self.zk.add_listener(move |x| handle_state_change(&latch, x)); # leader.rs fn stop...

https://github.com/DiligentGraphics/DiligentCore/blob/8be34c5ac4021eec223cc4609e79fa71421063f8/Graphics/GraphicsEngineOpenGL/src/DeviceContextGLImpl.cpp#L658 call m_AttachmentClearValues.clear() in DeviceContextGLImpl::NextSubpass(),if there more than two subpass,the clear value not exists after first call for NextSubpass. delete this line work well.

### Describe the bug fitbox for small box not work.nothing rendered,for example this model [https://threejs.org/examples/models/gltf/BoomBox.glb](url)。boundingBoxSize {x: 0.019842308, y: 0.01954326, z: 0.0201524906} 。fitToBox can't visible the model. ### To Reproduce fitBox...

https://github.com/pmndrs/three-stdlib/blob/e6653ce06ece56e5bb392d42b979294f489a1c5e/src/postprocessing/SSAOPass.d.ts#L30