ENGCOM-7973: #1709: Modified date is not updated when Editing image Tags the second time #29424

 - Merge Pull Request #29424 from jmonteros422/magento2-1:1709-modified-date-is-not-updated-when-editing-image-tags-the-second-time
 - Merged commits:
   1. bd364fb

Author: magento-engcom-team

app/code/Magento/MediaGallery/Model/ResourceModel/Keyword/SaveAssetLinks.php

@@ -24,6 +24,7 @@ class SaveAssetLinks
     private const TABLE_ASSET_KEYWORD = 'media_gallery_asset_keyword';
     private const FIELD_ASSET_ID = 'asset_id';
     private const FIELD_KEYWORD_ID = 'keyword_id';
+    private const TABLE_MEDIA_ASSET = 'media_gallery_asset';
 
     /**
      * @var ResourceConnection
@@ -73,6 +74,10 @@ public function execute(int $assetId, array $keywordIds): void
 
         $this->deleteAssetKeywords($assetId, $obsoleteKeywordIds);
         $this->insertAssetKeywords($assetId, $newKeywordIds);
+
+        if ($obsoleteKeywordIds || $newKeywordIds) {
+            $this->setAssetUpdatedAt($assetId);
+        }
     }
 
     /**
@@ -179,4 +184,28 @@ function (KeywordInterface $keyword): int {
             $keywordsData
         );
     }
+
+    /**
+     * Updates modified date of media asset
+     *
+     * @param int $assetId
+     * @throws CouldNotSaveException
+     */
+    private function setAssetUpdatedAt(int $assetId): void
+    {
+        try {
+            $connection = $this->resourceConnection->getConnection();
+            $connection->update(
+                $connection->getTableName(self::TABLE_MEDIA_ASSET),
+                ['updated_at' => null],
+                ['id =?' => $assetId]
+            );
+        } catch (\Exception $exception) {
+            $this->logger->critical($exception);
+            throw new CouldNotSaveException(
+                __('Could not update assets modified date'),
+                $exception
+            );
+        }
+    }
 }

app/code/Magento/MediaGallery/Test/Unit/Model/ResourceModel/Keyword/SaveAssetLinksTest.php

@@ -75,7 +75,7 @@ public function testAssetKeywordsSave(int $assetId, array $keywordIds, array $va
         $expectedCalls = (int) (count($keywordIds));
 
         if ($expectedCalls) {
-            $this->resourceConnectionMock->expects($this->once())
+            $this->resourceConnectionMock->expects($this->exactly(2))
                 ->method('getConnection')
                 ->willReturn($this->connectionMock);
             $this->resourceConnectionMock->expects($this->once())