feat: to add tag when tag input is unfocus (#21555)

web/i18n/en-US/dataset-documents.ts

@@ -355,7 +355,9 @@ const translation = {
     newChildChunk: 'New Child Chunk',
     keywords: 'KEYWORDS',
     addKeyWord: 'Add keyword',
+    keywordEmpty: 'The keyword cannot be empty',
     keywordError: 'The maximum length of keyword is 20',
+    keywordDuplicate: 'The keyword already exists',
     characters_one: 'character',
     characters_other: 'characters',
     hitCount: 'Retrieval count',