Arabic translations incomplete - missing libadwaita.mo in gnome-46-2404 snap

[sniper1720]

The gnome-46-2404 snap is missing libadwaita.mo for Arabic (ar) locale, while other languages like French (fr) have it.

Steps to Reproduce

1. Install gnome-46-2404 snap
2. Compare locale files for Arabic vs French:

ls /snap/gnome-46-2404/current/usr/share/locale/fr/LC_MESSAGES/ | grep libadwaita
ls /snap/gnome-46-2404/current/usr/share/locale/ar/LC_MESSAGES/ | grep libadwaita

• French: HAS libadwaita.mo
• Arabic: MISSING libadwaita.mo

Expected Behavior

Arabic locale should have libadwaita.mo like other languages.

Investigation

• Ubuntu's language-pack-gnome-ar package DOES include libadwaita.mo (verified by extracting and checking)
• The gnome-46-2404-sdk's gtk-locales part appears to copy an incomplete set of translations

Environment

• gnome-46-2404 snap version: latest stable
• Ubuntu 24.04