chore: add missing i18n (#17517)

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

       watercrawlNotConfiguredDescription: 'Configure Watercrawl with API key to use it.',
       jinaReaderNotConfigured: 'Jina Reader is not configured',
       jinaReaderNotConfiguredDescription: 'Set up Jina Reader by entering your free API key for access.',
+      waterCrawlNotConfigured: 'Watercrawl is not configured',
+      waterCrawlNotConfiguredDescription: 'Configure Watercrawl with API key to use it.',
       configure: 'Configure',
       configureFirecrawl: 'Configure Firecrawl',
       configureWatercrawl: 'Configure Watercrawl',

web/i18n/zh-Hans/dataset-creation.ts

       fireCrawlNotConfiguredDescription: '请配置 Firecrawl 的 API 密钥以使用它。',
       jinaReaderNotConfigured: 'Jina Reader 未配置',
       jinaReaderNotConfiguredDescription: '请配置 Jina Reader 的免费 API 密钥以访问它。',
+      waterCrawlNotConfigured: 'Watercrawl 未配置',
+      waterCrawlNotConfiguredDescription: '请配置 Watercrawl 的 API 密钥以使用它。',
       configure: '配置',
       configureFirecrawl: '配置 Firecrawl',
       configureJinaReader: '配置 Jina Reader',