ENGCOM-8042: Correctly revert default mode after mass image deletion #29684

 - Merge Pull Request #29684 from Nazar65/magento2:ASI-1769
 - Merged commits:
   1. 4e11232
   2. f648b8b
   3. fe78100

Author: magento-engcom-team

app/code/Magento/MediaGalleryUi/Test/Mftf/ActionGroup/AdminEnhancedMediaGalleryAssertMassActionModeNotActiveActionGroup.xml

@@ -12,8 +12,8 @@
         <annotations>
             <description>Asserts that massaction mode is terminated</description>
         </annotations>
-       
 
+        <dontSeeElement selector="{{AdminMediaGalleryHeaderButtonsSection.addSelected}}" stepKey="verifyAddSelectedButtonNotVisible"/>
         <dontSeeElement selector="{{AdminEnhancedMediaGalleryMassActionSection.totalSelected}}" stepKey="verifyTeminateMassAction"/>
     </actionGroup>
 </actionGroups>

app/code/Magento/MediaGalleryUi/Test/Mftf/Test/AdminEnhancedMediaGalleryDeleteImagesInBulkTest.xml

@@ -19,9 +19,17 @@
             <group value="media_gallery_ui"/>
         </annotations>
         <before>
+            <createData entity="SimpleSubCategory" stepKey="category"/>
             <actionGroup ref="AdminLoginActionGroup" stepKey="loginAsAdmin"/>
-            <actionGroup ref="AdminOpenStandaloneMediaGalleryActionGroup" stepKey="openMediaGallery"/>
+            <actionGroup ref="AdminOpenCategoryPageActionGroup" stepKey="openCategoryPage"/>
+            <actionGroup ref="AdminCategoriesOpenCategoryActionGroup" stepKey="openCategory">
+                <argument name="category" value="$$category$$"/>
+            </actionGroup>
+            <actionGroup ref="AdminOpenMediaGalleryFromCategoryImageUploaderActionGroup" stepKey="openMediaGalleryFromWysiwyg"/>
         </before>
+        <after>
+            <deleteData createDataKey="category" stepKey="deleteCategory"/>
+        </after>
         <actionGroup ref="AdminEnhancedMediaGalleryUploadImageActionGroup" stepKey="uploadImage">
             <argument name="image" value="ImageUpload"/>
         </actionGroup>
@@ -34,7 +42,7 @@
             <argument name="imageName" value="{{ImageUpload.fileName}}"/>
         </actionGroup>
         <actionGroup ref="AdminEnhancedMediaGalleryDisableMassactionModeActionGroup" stepKey="disableMassActionMode"/>
-        
+
         <actionGroup ref="AdminEnhancedMediaGalleryEnableMassActionModeActionGroup" stepKey="enableMassActionToDeleteImages"/>
         <actionGroup ref="AdminEnhancedMediaGallerySelectImageForMassActionActionGroup" stepKey="selectFirstImageToDelete">
             <argument name="imageName" value="{{ImageUpload.fileName}}"/>

app/code/Magento/MediaGalleryUi/view/adminhtml/web/js/grid/massaction/massactions.js

@@ -141,10 +141,8 @@ define([
                             if (response.status === 'canceled') {
                                 return;
                             }
-                            this.imageModel().selected({});
-                            this.massActionMode(false);
-                            this.switchMode();
-                        }.bind(this));
+                            $(window).trigger('terminateMassAction.MediaGallery');
+                        });
                     }
                 }.bind(this));
             }