fix: ja_JP build error

Author: barry-ran

QtScrcpy/main.cpp

@@ -151,14 +151,13 @@ void installTranslator()
     case QLocale::Chinese:
         languagePath += "zh_CN.qm";
         break;
+    case QLocale::Japanese:
+        languagePath += "ja_JP.qm";
+        break;
     case QLocale::English:
     default:
         languagePath += "en_US.qm";
         break;
-    case QLocale::Japanese:
-    default:
-        languagePath += "ja_JP.qm";
-        break;
     }
 
     auto loaded = translator.load(languagePath);