AI Assistant: fix aichat screenshot tests

packages/devextreme/js/__internal/grids/grid_core/ai_chat/const.ts

@@ -53,6 +53,6 @@ export const CLASSES = {
 export const CLEAR_CHAT_ICON = 'clearhistory';
 export const REGENERATE_ICON = 'restore';
 
-export const SUCCESS_ITEM_EMOJI = '✅';
-export const ERROR_ITEM_EMOJI = '❌';
-export const ABORTED_ITEM_EMOJI = '⚠️';
+export const SUCCESS_ITEM_EMOJI = '\u2705';
+export const ERROR_ITEM_EMOJI = '\u274C';
+export const ABORTED_ITEM_EMOJI = '\u26A0\uFE0F';

packages/testcafe-models/dataGrid/aiAssistantChat.ts

@@ -1,3 +1,4 @@
+import { Selector } from 'testcafe';
 import Popup from '../popup';
 import Button from '../button';
 import Chat from '../chat';
@@ -28,32 +29,36 @@ const CLASS = {
 };
 
 export class AIAssistantChat extends Popup {
+  getWrapper(): Selector {
+    return this.element;
+  }
+
   getChat(): Chat {
-    return new Chat(this.getWrapper().find(`.${CLASS.aiChatContent}`));
+    return new Chat(this.element.find(`.${CLASS.aiChatContent}`));
   }
 
   getCloseButton(): Button {
-    return new Button(this.getWrapper().find(`.${CLASS.closeButton}`));
+    return new Button(this.element.find(`.${CLASS.closeButton}`));
   }
 
   getClearChatButton(): Selector {
-    return this.getWrapper().find(`.${CLASS.clearChatButton}`);
+    return this.element.find(`.${CLASS.clearChatButton}`);
   }
 
   getMessages(): Selector {
-    return this.getWrapper().find(`.${CLASS.message}`);
+    return this.element.find(`.${CLASS.message}`);
   }
 
   getPendingMessages(): Selector {
-    return this.getWrapper().find(`.${CLASS.messagePending}`);
+    return this.element.find(`.${CLASS.messagePending}`);
   }
 
   getSuccessMessages(): Selector {
-    return this.getWrapper().find(`.${CLASS.messageSuccess}`);
+    return this.element.find(`.${CLASS.messageSuccess}`);
   }
 
   getErrorMessages(): Selector {
-    return this.getWrapper().find(`.${CLASS.messageError}`);
+    return this.element.find(`.${CLASS.messageError}`);
   }
 
   getMessage(index: number): Selector {

packages/testcafe-models/dataGrid/index.ts

@@ -1039,7 +1039,7 @@ export default class DataGrid extends GridCore {
   }
 
   getAIAssistantChat(): AIAssistantChat {
-    return new AIAssistantChat(this.body.find(`.${CLASS.aiAssistantChat}`));
+    return new AIAssistantChat(this.body.find(`.${CLASS.overlayWrapper}.${CLASS.aiAssistantChat}`));
   }
 
   getAIAssistantButton(): Selector {