[editor] Fix element panel still showing deleted element

projects/editor/src/app/components/unit-view/page-view/canvas/canvas-element-overlay.ts

@@ -61,6 +61,7 @@ export abstract class CanvasElementOverlay {
       ])
         .subscribe((results: [UnitUIElement[], UnitPageSection]) => {
           this.unitService.deleteElementsFromSection(results[0], results[1]);
+          this.selectionService.clearElementSelection();
         })
         .unsubscribe();
     }

projects/editor/src/app/components/unit-view/page-view/properties/element-properties.component.ts

@@ -412,6 +412,7 @@ export class ElementPropertiesComponent implements OnInit, OnDestroy {
       .pipe(take(1))
       .subscribe(selectedPageSection => {
         this.unitService.deleteElementsFromSection(this.selectedElements, selectedPageSection);
+        this.selectionService.clearElementSelection();
       })
       .unsubscribe();
   }

projects/editor/src/app/selection.service.ts

@@ -74,10 +74,11 @@ export class SelectionService {
     this._selectedElements.next(this.selectedElementComponents.map(componentElement => componentElement.element));
   }
 
-  private clearElementSelection() {
+  clearElementSelection(): void {
     this.selectedElementComponents.forEach((overlayComponent: any) => {
       overlayComponent.setSelected(false);
     });
     this.selectedElementComponents = [];
+    this._selectedElements.next([]);
   }
 }