🐛 fix: Ensure channel tooltip displays correctly in LogsTable

* Refactored the render logic of the **Channel** column
  * Wrapped tooltip around the first `Tag` only to restore hover behavior when multi-key mode is enabled
  * Added i18n-friendly fallback (`t('未知渠道')`) for cases where `channel_name` is missing
* Improves user experience for administrators by reliably showing channel names even with multiple keys

web/src/i18n/locales/en.json

@@ -1773,5 +1773,6 @@
   "请上传密钥文件": "Please upload the key file",
   "请填写部署地区": "Please fill in the deployment region",
   "请输入部署地区，例如：us-central1\n支持使用模型映射格式\n{\n    \"default\": \"us-central1\",\n    \"claude-3-5-sonnet-20240620\": \"europe-west1\"\n}": "Please enter the deployment region, for example: us-central1\nSupports using model mapping format\n{\n    \"default\": \"us-central1\",\n    \"claude-3-5-sonnet-20240620\": \"europe-west1\"\n}",
-  "其他": "Other"
+  "其他": "Other",
+  "未知渠道": "Unknown channel"
 }