fix(*): remove dragImage async and fix test

Author: mtsvyatkova

src/components/tile-manager/tile-manager.spec.ts

@@ -152,19 +152,12 @@ describe('Tile Manager component', () => {
           part="resize"
         >
           <div
-            part="tile-container"
+            part="base draggable resizable"
             style="--ig-col-span:1;--ig-row-span:1;"
           >
-            <div inert part="ghost">
-            </div>
-            <div
-              part="base draggable resizable"
-              style="transform:;"
-            >
-              <slot name="header"></slot>
-              <div part="content-container">
-                <slot></slot>
-              </div>
+            <slot name="header"></slot>
+            <div part="content-container">
+              <slot></slot>
             </div>
           </div>
         </igc-resize>`

src/components/tile-manager/tile.ts

@@ -295,7 +295,7 @@ export default class IgcTileComponent extends EventEmitterMixin<
     });
   }
 
-  private async assignDragImage(e: DragEvent) {
+  private assignDragImage(e: DragEvent) {
     const rect = this.getBoundingClientRect();
     const offsetX = e.clientX - rect.left;
     const offsetY = e.clientY - rect.top;
@@ -305,19 +305,19 @@ export default class IgcTileComponent extends EventEmitterMixin<
     Object.assign(this._dragImage.style, {
       width: compStyles.width,
       height: compStyles.height,
+      position: 'absolute',
+      top: '-99999px',
+      left: '-99999px',
     });
-    this._dragImage.style.position = 'absolute';
-    this._dragImage.style.top = '-99999px';
-    this._dragImage.style.left = '-99999px';
 
     document.body.append(this._dragImage);
 
     e.dataTransfer!.setDragImage(this._dragImage, offsetX, offsetY);
     e.dataTransfer!.effectAllowed = 'move';
   }
 
-  private async handleDragStart(e: DragEvent) {
-    await this.assignDragImage(e);
+  private handleDragStart(e: DragEvent) {
+    this.assignDragImage(e);
 
     this.emitEvent('tileDragStart', { detail: this });
     this._dragGhost = this.ghostFactory();