fix(state): do not destroy screencopy proxy on SHM buffer event

src/state.rs

@@ -1214,7 +1214,6 @@ impl Dispatch<ZwlrScreencopyFrameV1, ()> for State<CapWlrScreencopy> {
                 tracing::warn!(
                     "Received SHM Buffer event — only DMA-BUF capture is supported. Ignoring."
                 );
-                proxy.destroy();
                 return;
             }
             ScreencopyFrameEvent::LinuxDmabuf {