Calendar Lite 1.6: English month and weekday names in English mode

They came from the phone's locale, so a phone set to Spanish showed "Octubre 2026" with an
English interface (and I18nTest failed on any machine not set to English).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/org/gingercal/L.java

@@ -42,7 +42,7 @@ public final class L {
     static final String[] GL_DAYS_SHORT = {"", "dom", "lun", "mar", "mér", "xov", "ven", "sáb"};
 
     public static DateFormatSymbols symbols() {
-        if (!gl) return new DateFormatSymbols(Locale.getDefault());
+        if (!gl) return new DateFormatSymbols(Locale.US);   // English names, whatever the phone's language
         DateFormatSymbols s = new DateFormatSymbols(Locale.US);
         s.setMonths(GL_MONTHS);
         s.setShortMonths(GL_MONTHS_SHORT);