Settings: list the languages alphabetically by their own name

- English (and Auto where offered) stays first as the source language and fallback; the rest sort by native name with accents folded, so Čeština is under C and Magyar under M; Cyrillic and CJK names follow the Latin ones
- The list used the registry order, which is the order the languages were added

crates/engine/src/prefs.rs

@@ -26,16 +26,18 @@ pub const PREFS_FILE: &str = "prefs.json";
 pub const LANGUAGES: &[(&str, &str)] = &[
     ("Match System", "system"),
     ("English", "en"),
+    // Alphabetical by the language's own name after English; Cyrillic, then CJK names follow the
+    // Latin ones.
+    ("Čeština", "cs"),
+    ("Deutsch", "de"),
+    ("Español", "es"),
+    ("Français", "fr"),
+    ("Português (Brasil)", "pt-br"),
+    ("Русский", "ru"),
+    ("Українська", "uk"),
     ("日本語", "ja"),
     ("简体中文", "zh-hans"),
     ("繁體中文", "zh-hant"),
-    ("Українська", "uk"),
-    ("Español", "es"),
-    ("Português (Brasil)", "pt-br"),
-    ("Русский", "ru"),
-    ("Français", "fr"),
-    ("Deutsch", "de"),
-    ("Čeština", "cs"),
 ];
 
 /// Settings ▸ Startup & Repair ▸ Window Graphics: (label, `startup.windowGraphics` value).