imp - Current user language should be conditionally set

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When using UserLang to change the language for other users, we need to set the current language only if we're doing it on ourselves.

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Type: imp
Breaking: False
Doc Required: False
Part: 1/1

public/Nitrocid/Shell/Shells/Admin/Commands/UserLang.cs

@@ -51,7 +51,11 @@ public override int Execute(CommandParameters parameters, ref string variableVal
             else if (LanguageManager.Languages.TryGetValue(lang, out LanguageInfo langInfo))
             {
                 // Do it locally
-                LanguageManager.currentUserLanguage = langInfo;
+                if (UserManagement.CurrentUser.Username == userName)
+                {
+                    LanguageManager.currentUserLanguage = langInfo;
+                    UserManagement.CurrentUser.PreferredLanguage = lang;
+                }
 
                 // Now, change the language in the user config
                 UserManagement.Users[userIndex].PreferredLanguage = lang;