Merge remote-tracking branch 'upstream/main' into pr1405-fix

src/layers/recentImagery/display.js

@@ -33,7 +33,9 @@ export const READOUT_WORDS = Object.freeze({
   date: (day) => displayDay(day, LONG_DAY),
   daysAgo: (delta) => {
     const text = formatRelativeTime(delta > 0 ? -delta : 0, 'day');
-    return getLocale() === 'zh-CN' ? text.replace(/(\d)(?=天)/g, '$1 ') : text;
+    return getLocale().startsWith('zh-')
+      ? text.replace(/(\d)(?=天)/g, '$1 ')
+      : text;
   },
   // "Sentinel-2" never breaks at its hyphen: a word joiner follows it
   // (JetBrains Mono has no U+2011 non-breaking hyphen).