refactor: return early if no progressData

use localeOption (lang code) fallback for source or target names instead of empty string

src/components/LanguagePicker/useLanguagePicker.tsx

@@ -108,8 +108,23 @@ export const useLanguagePicker = (
               (dataItem!.words.approved / dataItem!.words.total) * 100
             ) || 0
 
-      if (progressData.length === 0) {
-        console.warn("Missing translation progress data; check GitHub action")
+      const isBrowserDefault = browserLocales.includes(localeOption)
+
+      const returnData: Partial<LocaleDisplayInfo> = {
+        localeOption,
+        sourceName: sourceName ?? localeOption,
+        targetName: targetName ?? localeOption,
+        englishName,
+        isBrowserDefault,
+      }
+
+      if (progressData.length < 1) {
+        console.warn(`Missing translation progress data; check GitHub action`)
+        return {
+          ...returnData,
+          approvalProgress: 0,
+          wordsApproved: 0,
+        } as LocaleDisplayInfo
       }
 
       const totalWords = progressData[0].words.total
@@ -119,17 +134,11 @@ export const useLanguagePicker = (
           ? totalWords || 0
           : dataItem?.words.approved || 0
 
-      const isBrowserDefault = browserLocales.includes(localeOption)
-
       return {
-        localeOption,
+        ...returnData,
         approvalProgress,
-        sourceName: sourceName ?? "",
-        targetName: targetName ?? "",
-        englishName,
         wordsApproved,
-        isBrowserDefault,
-      }
+      } as LocaleDisplayInfo
     }
 
     const displayNames: LocaleDisplayInfo[] =