show welcome screen when using default selection tool

packages/excalidraw/components/App.tsx

@@ -1607,7 +1607,8 @@ class App extends React.Component<AppProps, AppState> {
                           renderWelcomeScreen={
                             !this.state.isLoading &&
                             this.state.showWelcomeScreen &&
-                            this.state.activeTool.type === "selection" &&
+                            this.state.activeTool.type ===
+                              this.defaultSelectionTool &&
                             !this.state.zenModeEnabled &&
                             !this.scene.getElementsIncludingDeleted().length
                           }