Pull request overview

Updates the Greek (el-GR) locale strings based on the latest Crowdin translation sync, keeping UI text consistent with current product terminology and tone.

Changes:

• Refines several el-GR translations to use consistent informal tone (e.g., “μπορείς/Γράψε/Κατέβασε”).
• Localizes previously untranslated UI labels (e.g., “Upload” → “Μεταφόρτωση”, “Run” → “Εκτέλεση”).
• Aligns product naming/phrasing with other locales (e.g., “Code Editor” used as a proper product name; “new code project” phrasing).

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