fix: attachment limit toast copy

[bigint]

What does this PR do?

🤖 Generated by Copilot at 27cba0d

This pull request improves the translations and error messages for different languages in the web app. It fixes some inconsistencies and typos in messages.po files for Spanish, Tamil, and Chinese, and updates the error message for attachment upload limit in Attachment.tsx and en/messages.po.

Related issues

Fixes # (issue)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Enhancement (non-breaking small changes to existing functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Explanation of the changes

🤖 Generated by Copilot at 27cba0d

• Lowercase the error message for exceeding the upload limit of attachments in Attachment.tsx (link)
• Update the translations of the error message in English, Spanish, Tamil, and Chinese in messages.po files (link, link, link, link)
• Remove the empty lines at the end of the translation files to avoid unnecessary whitespace (link, link, link)

Emoji

📝🛠️🧹

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Name	Status	Preview	Updated (UTC)
prerender	✅ Ready (Inspect)	Visit Preview	Apr 8, 2023 4:38pm
web	✅ Ready (Inspect)	Visit Preview	Apr 8, 2023 4:38pm