Add early return after setting SystemLanguageCode

Ensure method exits immediately after finding a matching language code to prevent unnecessary checks and potential overwriting of SystemLanguageCode.

Author: Jack251970

Flow.Launcher.Core/Resource/Internationalization.cs

@@ -59,6 +59,7 @@ public static void InitSystemLanguageCode()
                     string.Equals(languageCode, fullName, StringComparison.OrdinalIgnoreCase))
                 {
                     SystemLanguageCode = languageCode;
+                    return;
                 }
             }