fix: apply UI language changes immediately in settings

Previously, changing the UI language in settings required an app
restart. The setLocale call was missing the { reload: false } parameter
that was added to SetupWizard in PR #30.

Now the UI updates immediately when saving settings with a new language
selection, matching the behavior of the setup wizard.

Author: tphakala

src/renderer/src/lib/components/SettingsPanel.svelte

@@ -265,7 +265,7 @@
 
       // If UI language changed, reload to apply new locale
       if (previousLang !== settings.ui_language && isLocale(settings.ui_language)) {
-        void setLocale(settings.ui_language);
+        void setLocale(settings.ui_language, { reload: false });
         return;
       }