Deselect visualization when its node gets removed

CHANGELOG.md

@@ -13,6 +13,7 @@
 #### Visual Environment
 
 - [Delete key will delete selected nodes][1538].
+- [It is possible to move around after deleting a selected visualization][1556].
 
 #### EnsoGL (rendering engine)
 

src/rust/ide/view/graph-editor/src/lib.rs

@@ -1405,6 +1405,7 @@ impl GraphEditorModel {
         let node_id = node_id.into();
         self.nodes.remove(&node_id);
         self.nodes.selected.remove_item(&node_id);
+        self.frp.source.on_visualization_select.emit(Switch::Off(node_id));
     }
 
     fn node_in_edges(&self, node_id:impl Into<NodeId>) -> Vec<EdgeId> {