i18n: Translate new keys for pt-BR

[JohnnyMendesC]

References

• No specific issue ticket. Addresses pending translation keys in the codebase.

Description

This PR updates the Portuguese (Brazil) translation file (src/assets/i18n/pt-BR.json5). It addresses approximately 290 keys previously marked as // TODO New key - Add a translation and // TODO Source message changed - Revise the translation, covering generic messages, admin curation tasks, bitstream formats, external login, and LDN/COAR Notify services.

Instructions for Reviewers

List of changes in this PR:

• Translated ~290 keys marked as TODO.
• Removed the // TODO New key - Add a translation and // TODO Source message changed - Revise the translation.

Guidance for testing:

1. Switch the UI language to Português (Brasil).
2. Verify that the newly translated keys (e.g., in Admin > Curation Tasks or LDN Services) appear correctly and are not falling back to English.

Checklist

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[t-rodrigues]

I’ve reviewed the pull request and left a few minor suggestions, mostly related to wording and consistency.
Overall, looks good.

Revisei o pull request e deixei algumas sugestões, principalmente relacionadas à escrita e à consistência.

[JohnnyMendesC]

Thank you for reviewing my PR @t-rodrigues
I've checked the suggestions you left and they were all helpful and precise, so I added them to the last commit.

Agradeço por revisar meu PR @t-rodrigues
Verifiquei as sugestões que você deixou e todas foram de grande ajuda e precisas, então as adicionei ao último commit.

[t-rodrigues]

Thanks for addressing the suggested translation adjustments. I’ve reviewed the updates and everything looks consistent now. Approving the PR.

Obrigado por ajustar as sugestões de tradução. Revisei as alterações e agora está tudo consistente. PR aprovado.

[tdonohue]

👍 Thanks @JohnnyMendesC ! Looks good to me too. I performed basic tests just to ensure the new translations appear.

[dspace-bot]

Successfully created backport PR for dspace-9_x:

• [Port dspace-9_x] i18n: Translate new keys for pt-BR #5103