[FEATURE] It seems that there is currently only i18n support for English?

[linghengqian]

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• I saw https://github.com/opensearch-project/dashboards-i18n/blob/main/DEVELOPER_GUIDE.md which claims to implement i18n for multiple languages ​​via files under the translations folder.

Currently, we support en/en-US (English), es/es-LA (Spanish), fr/fr-FR (French), de/de-DE (German), ja/ja-JP (Japanese), ko/ko-KR (Korean), ru/ru-RU (Russian), zh/zh-CN (Chinese). If your locale is not in it, please open an issue in OpenSearch Dashboards.

• But I looked at https://github.com/opensearch-project/dashboards-i18n/tree/main/translations and it seems there is only text in English?
• 
• Am I to understand that i18n work for languages ​​other than English hasn't actually started yet?
• Or what is the relationship between the current git and https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/packages/osd-i18n? Changing the i18n language through the URL, but there is no corresponding documentation, really confuses me.

another.mp4

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• No sure.

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• No sure.

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• See Change the locale dynamically by adding &i18n-locale to URL OpenSearch-Dashboards#7686 .
• See [BUG] Docker Image's I18N_LOCALE environment variable does not seem to work OpenSearch-Dashboards#8075 .

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