fix(TileManager): Some tweaks in actions and layout samples.

Author: gedinakova

samples/layouts/tile-manager/actions/src/index.tsx

@@ -106,13 +106,13 @@ export default class Actions extends React.Component<any, any> {
           </IgrTile>
           <IgrTile disableFullscreen disableMaximize>
             <h3 slot="title">Custom Actions</h3>
-            <IgrIconButton id="customOne" onClick={this.onCustomOneClick} slot="actions" variant="flat" collection="material" exportparts="icon" name="north_east"
+            <IgrIconButton id="customOne" onClick={this.onCustomOneClick} slot="actions" variant="flat" collection="material" name="north_east"
             aria-label="north_east"></IgrIconButton>
             <p>Replace the default actions with custom ones, and include extra actions when the tile is maximized.</p>
           </IgrTile>
           <IgrTile disableFullscreen disableMaximize>
-            <IgrIconButton id="customTwo" onClick={this.onCustomTwoClick} slot="actions" variant="flat" collection="material" exportparts="icon"
-            name="north_east"></IgrIconButton>
+            <IgrIconButton id="customTwo" onClick={this.onCustomTwoClick} slot="actions" variant="flat" collection="material"
+            name="north_east" aria-label="north_east"></IgrIconButton>
             <p>Display only custom actions in the header.</p>
           </IgrTile>
           <IgrTile disableFullscreen disableMaximize>

samples/layouts/tile-manager/layout/src/index.tsx

@@ -26,7 +26,7 @@ export default class Layout extends Component<any, any> {
     newTile.position = 0;
     newTile.append(contentHeader);
     newTile.append(content);
-    this.tileManagerRef.current.insertBefore(newTile, this.tileManagerRef.current.tiles.at(-1));
+    (this.tileManagerRef.current as IgrTileManager).appendChild(newTile);
   }
 
   public render(): JSX.Element {