fix: Remove flushSync from alt-lasso and elbow dragging (#9734)

* Remove lasso flushSync

* Remove selectedLinearElement flushSync

* Early return

packages/excalidraw/components/App.tsx

@@ -8095,8 +8095,6 @@ class App extends React.Component<AppProps, AppState> {
           this.scene,
         );
 
-        flushSync(() => {
-          if (this.state.selectedLinearElement) {
         this.setState({
           selectedLinearElement: {
             ...this.state.selectedLinearElement,
@@ -8104,8 +8102,6 @@ class App extends React.Component<AppProps, AppState> {
             pointerDownState: ret.pointerDownState,
           },
         });
-          }
-        });
         return;
       }
 
@@ -8618,7 +8614,6 @@ class App extends React.Component<AppProps, AppState> {
         pointerDownState.lastCoords.x = pointerCoords.x;
         pointerDownState.lastCoords.y = pointerCoords.y;
         if (event.altKey) {
-          flushSync(() => {
           this.setActiveTool(
             { type: "lasso", fromSelection: true },
             event.shiftKey,
@@ -8631,10 +8626,9 @@ class App extends React.Component<AppProps, AppState> {
           this.setAppState({
             selectionElement: null,
           });
-          });
+          return;
-        } else {
-          this.maybeDragNewGenericElement(pointerDownState, event);
         }
+        this.maybeDragNewGenericElement(pointerDownState, event);
       } else if (this.state.activeTool.type === "lasso") {
         if (!event.altKey && this.state.activeTool.fromSelection) {
           this.setActiveTool({ type: "selection" });