[8.18] [UA] Update UI copy for batch reindex API (#209403) (#209625)

# Backport

This will backport the following commits from `main` to `8.18`:
- [[UA] Update UI copy for batch reindex API
(#209403)](#209403)

<!--- Backport version: 9.4.3 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

<!--BACKPORT [{"author":{"name":"Christiane (Tina)
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Update UI copy for batch reindex API (#209403)\n\nfix
https://github.com/elastic/kibana/issues/209081\r\n\r\nUpdates UI copy
for the batch reindexing API only supporting indices.\r\n\r\nNote to
reviewers: There wasn't an entry for the translation id
for\r\nFrench.\r\n\r\n---------\r\n\r\nCo-authored-by: Jean-Louis
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Update UI copy for batch reindex
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Update UI copy for batch reindex API (#209403)\n\nfix
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https://github.com/elastic/kibana/issues/209081\r\n\r\nUpdates UI copy
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BACKPORT-->

Co-authored-by: Christiane (Tina) Heiligers <christiane.heiligers@elastic.co>

docs/api/upgrade-assistant/batch_reindexing.asciidoc

@@ -6,9 +6,11 @@
 
 experimental["The underlying Upgrade Assistant concepts are stable, but the APIs for managing Upgrade Assistant are experimental."]
 
-Start or resume multiple <<start-resume-reindex, reindexing>> tasks in one request. Additionally, reindexing tasks started or resumed
-via the batch endpoint will be placed on a queue and executed one-by-one, which ensures that minimal cluster resources
-are consumed over time.
+Start or resume upgrading multiple indices in one request. Additionally, <<start-resume-reindex, reindexing>> tasks for upgrading 
+indices that are started or resumed via the batch endpoint will be placed on a queue and executed one-by-one. This ensures that 
+minimal cluster resources are consumed over time. 
+
+NOTE: This API does not support data streams.
 
 [[batch-start-resume-reindex-request]]
 ==== Request

x-pack/platform/plugins/private/translations/translations/ja-JP.json

@@ -48142,7 +48142,6 @@
     "xpack.upgradeAssistant.esDeprecationLogs.documentationLinkText": "ドキュメント",
     "xpack.upgradeAssistant.esDeprecationLogs.pageDescription": "廃止予定ログを確認し、アプリケーションが廃止予定のAPIを使用しているかどうかを判断してください。アップグレード後に、エラーまたは動作の変更を防止するには、アプリケーションを更新します。",
     "xpack.upgradeAssistant.esDeprecationLogs.pageTitle": "Elasticsearchの廃止予定ログ",
-    "xpack.upgradeAssistant.esDeprecations.batchReindexingDocsDescription": "1つの要求で複数の再インデックスタスクを開始するには、Kibana {docsLink}を使用します。",
     "xpack.upgradeAssistant.esDeprecations.batchReindexingDocsLink": "バッチ再インデックスAPI",
     "xpack.upgradeAssistant.esDeprecations.clusterDeprecationTypeLabel": "クラスター",
     "xpack.upgradeAssistant.esDeprecations.clusterSettings.deleteCompleteText": "廃止予定の設定が削除されました",

x-pack/platform/plugins/private/translations/translations/zh-CN.json

@@ -48249,7 +48249,6 @@
     "xpack.upgradeAssistant.esDeprecationLogs.documentationLinkText": "文档",
     "xpack.upgradeAssistant.esDeprecationLogs.pageDescription": "请复查弃用日志以确定您的应用程序是否正使用任何已弃用的 API。在升级后，请更新应用程序以防止错误或行为更改。",
     "xpack.upgradeAssistant.esDeprecationLogs.pageTitle": "Elasticsearch 弃用日志",
-    "xpack.upgradeAssistant.esDeprecations.batchReindexingDocsDescription": "要在单一请求中启动多个重新索引任务，请使用 Kibana {docsLink}。",
     "xpack.upgradeAssistant.esDeprecations.batchReindexingDocsLink": "批量重新索引 API",
     "xpack.upgradeAssistant.esDeprecations.clusterDeprecationTypeLabel": "集群",
     "xpack.upgradeAssistant.esDeprecations.clusterSettings.deleteCompleteText": "过时设置已移除",

x-pack/platform/plugins/private/upgrade_assistant/public/application/components/es_deprecations/es_deprecations.tsx

@@ -77,7 +77,7 @@ const getBatchReindexLink = (docLinks: DocLinksStart) => {
   return (
     <FormattedMessage
       id="xpack.upgradeAssistant.esDeprecations.batchReindexingDocsDescription"
-      defaultMessage="To start multiple reindexing tasks in a single request, use the Kibana {docsLink}."
+      defaultMessage="To start upgrading multiple indices in a single request, use the Kibana {docsLink}. Note: this API does not support data streams."
       values={{
         docsLink: (
           <EuiLink