Fix layers losing their names upon being grouped (#1637)

* no message

* no message

* no message

* Make layers reserve their names when grouped

* remove redundancy

* replace String::from("") with String::new()

* Fix test

* Restore unrequested line break changes

* Avoid unwraps

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

editor/src/dispatcher.rs

@@ -364,6 +364,7 @@ mod test {
 			nodes: HashMap::new(),
 			parent: LayerNodeIdentifier::ROOT,
 			insert_index: -1,
+			alias: String::new(),
 		});
 		editor.handle_message(NodeGraphMessage::SelectedNodesSet { nodes: vec![FOLDER_ID] });