🌐 refactor: Interpolate Localization Keys (#10650)

* fix: replace string concatenation of localization keys with interpolations and add keys for unlocalized string literals

* chore: update test for new localization key

---------

Co-authored-by: Danny Avila <danny@librechat.ai>

client/src/components/Sharing/PeoplePickerAdminSettings.tsx

@@ -166,9 +166,9 @@ const PeoplePickerAdminSettings = () => {
         </Button>
       </OGDialogTrigger>
       <OGDialogContent className="w-full border-border-light bg-surface-primary text-text-primary lg:w-1/4">
-        <OGDialogTitle>{`${localize('com_ui_admin_settings')} - ${localize(
-          'com_ui_people_picker',
-        )}`}</OGDialogTitle>
+        <OGDialogTitle>
+          {localize('com_ui_admin_settings_section', { section: localize('com_ui_people_picker') })}
+        </OGDialogTitle>
         <div className="p-2">
           {/* Role selection dropdown */}
           <div className="flex items-center gap-2">