[Issue] Deploy all used locales

[m2-assistant]

This issue is automatically created based on existing pull request: #28922: Deploy all used locales

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Preconditions: (*)

bin/magento setup:static-content:deploy --language=all currently only
deploys en_US, instead of the requested "all". This pull request aims to deploy all used languages for the frontend and all configured languages by admin users, when no language parameter is given. en_US is always additionally deployed by default.

Related Pull Requests

Fixed Issues (if relevant)

Steps to reproduce (*)

1. Configure multiple store views with different locales.
2. Configure a locale other than en_US for your admin user.
3. run bin/magento setup:static-content:deploy --language=all and verify that all configured languages, plus en_US are deployed.
4. run bin/magento setup:static-content:deploy --language=all --exclude-language=en_US and verify that en_US is skipped.
5. run bin/magento setup:static-content:deploy en_US and verify that only en_US is deployed
6. run bin/magento setup:static-content:deploy --language=en_US and verify that only en_US is deployed
7. run bin/magento setup:static-content:deploy -l en_US and verify that only en_US is deployed
8. run bin/magento setup:static-content:deploy --language=en_US en_UK and verify that only en_UK is deployed as the languages argument precedes over the language option

Actual Result:

Expected Result:

Questions or comments

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds are green)

[magento-engcom-team]

✅ Confirmed by @engcom-Alfa
Thank you for verifying the issue. Based on the provided information internal tickets MC-36072 were created

Issue Available: @engcom-Alfa, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.