fix: remote sketch creation if tree is not active

Closes #1715

Signed-off-by: Akos Kitta <a.kitta@arduino.cc>

arduino-ide-extension/src/browser/contributions/new-cloud-sketch.ts

@@ -202,13 +202,14 @@ export class NewCloudSketch extends Contribution {
   private treeModelFrom(
     widget: SketchbookWidget
   ): CloudSketchbookTreeModel | undefined {
-    const treeWidget = widget.getTreeWidget();
+    for (const treeWidget of widget.getTreeWidgets()) {
       if (treeWidget instanceof CloudSketchbookTreeWidget) {
         const model = treeWidget.model;
         if (model instanceof CloudSketchbookTreeModel) {
           return model;
         }
       }
+    }
     return undefined;
   }
 

arduino-ide-extension/src/browser/widgets/sketchbook/sketchbook-widget.tsx

@@ -53,10 +53,28 @@ export class SketchbookWidget extends BaseWidget {
     );
   }
 
+  /**
+   * The currently selected sketchbook tree widget inside the view.
+   */
   getTreeWidget(): SketchbookTreeWidget {
     return this.sketchbookCompositeWidget.treeWidget;
   }
 
+  /**
+   * An array of all sketchbook tree widgets managed by the view.
+   */
+  getTreeWidgets(): SketchbookTreeWidget[] {
+    return toArray(this.sketchbookTreesContainer.widgets()).reduce(
+      (acc, curr) => {
+        if (curr instanceof BaseSketchbookCompositeWidget) {
+          acc.push(curr.treeWidget);
+        }
+        return acc;
+      },
+      [] as SketchbookTreeWidget[]
+    );
+  }
+
   activeTreeWidgetId(): string | undefined {
     const selectedTreeWidgets = toArray(
       this.sketchbookTreesContainer.selectedWidgets()