Fixes for removing artboards; white infinite canvas background (#1497)

* Fix crash when drawing on a deleted artboard

* Fix clear artboards button

* White background on no artboards

* Re-disable Clear Artboards since it still crashes

---------

Co-authored-by: Keavon Chambers <keavon@keavon.com>

editor/src/messages/portfolio/document/document_message_handler.rs

@@ -296,7 +296,6 @@ impl MessageHandler<DocumentMessage, DocumentInputs<'_>> for DocumentMessageHand
 				info!("{:#?}\n{:#?}", self.document_legacy, self.layer_metadata);
 			}
 			DeleteLayer { layer_path } => {
-				responses.add_front(DocumentOperation::DeleteLayer { path: layer_path.clone() });
 				responses.add(GraphOperationMessage::DeleteLayer { id: layer_path[0] });
 				responses.add_front(BroadcastEvent::ToolAbort);
 				responses.add(PropertiesPanelMessage::CheckSelectedWasDeleted { path: layer_path });

editor/src/messages/portfolio/document/node_graph/graph_operation_message_handler.rs

@@ -709,6 +709,7 @@ impl MessageHandler<GraphOperationMessage, (&mut Document, &mut NodeGraphMessage
 			GraphOperationMessage::DeleteLayer { id } => {
 				let mut modify_inputs = ModifyInputsContext::new(document, node_graph, responses);
 				modify_inputs.delete_layer(id);
+				document.load_network_structure();
 			}
 			GraphOperationMessage::ClearArtboards => {
 				let mut modify_inputs = ModifyInputsContext::new(document, node_graph, responses);

editor/src/messages/tool/common_functionality/resize.rs

@@ -48,6 +48,10 @@ impl Resize {
 		let Some(layer) = self.layer else {
 			return None;
 		};
+		if !document.network().nodes.contains_key(&layer.to_node()) {
+			self.layer.take();
+			return None;
+		}
 
 		let mut start = self.viewport_drag_start(document);
 		let stop = self.snap_manager.snap_position(responses, document, ipp.mouse.position);