Exit sub-network via Escape key (#3285)

"Escape key in sub-network"

Co-authored-by: Timon <me@timon.zip>

Author: Sambhram1

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

@@ -496,6 +496,9 @@ impl MessageHandler<DocumentMessage, DocumentMessageContext<'_>> for DocumentMes
 					self.node_graph_handler.wire_in_progress_from_connector = None;
 					self.node_graph_handler.wire_in_progress_to_connector = None;
 					responses.add(FrontendMessage::UpdateWirePathInProgress { wire_path: None });
+				} else if !self.breadcrumb_network_path.is_empty() {
+					// Exit one level up if inside a nested network
+					responses.add(DocumentMessage::ExitNestedNetwork { steps_back: 1 });
 				} else {
 					responses.add(DocumentMessage::GraphViewOverlay { open: false });
 				}