Add locale files for some rtl languages

[zakariaf]

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Improvement (refactoring and improving code)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update

Description

This pull request introduces new locale files for Dhivehi (Maldives), Kurdish (Sorani), Pashto (Afghanistan), and Urdu (Pakistan), while also refining existing translations for Persian (Iran). These changes aim to enhance multilingual support for the platform.

New Locale Additions:

• Added complete translations for Dhivehi (_data/locales/dv-MV.yml), including layout text, sidebar tabs, search bar labels, copyright, and date/time formats.
• Added Kurdish (Sorani) translations (_data/locales/ku-IQ.yml) with similar structure and content as the Dhivehi locale.
• Added Pashto translations (_data/locales/ps-AF.yml) to provide comprehensive localization for Pashto-speaking users.
• Added Urdu translations (_data/locales/ur-PK.yml), covering all key UI elements and metadata.

Refinements to Existing Persian (Iran) Translations:

• Improved phrasing in copyright metadata (_data/locales/fa-IR.yaml).
• Adjusted singular/plural forms for words and pageview measures in posts (_data/locales/fa-IR.yaml).
• Fixed plural forms for categories and posts in Persian (_data/locales/fa-IR.yaml).

Additional context

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