fix: prevent menu closure when switching language in user dropdown

Set comboboxProps={{ withinPortal: false }} on the language Select
inside Menu.Dropdown so its option list renders inside the Menu's DOM
tree rather than a portal. This prevents the Menu from treating option
clicks as outside interactions and closing before changeLanguage fires.

apps/web/src/apps/auth/login/index.tsx

@@ -87,6 +87,7 @@ export default function LoginPage() {
               size="xs"
               variant="unstyled"
               w={90}
+              comboboxProps={{ withinPortal: false }}
               data={[
                 { value: 'en', label: t('common:english') },
                 { value: 'id', label: t('common:indonesian') },

apps/web/src/apps/main/layouts/components/header.layout.tsx

@@ -176,6 +176,7 @@ export default function HeaderLayout() {
                 size="xs"
                 variant="unstyled"
                 w={110}
+                comboboxProps={{ withinPortal: false }}
                 data={[
                   { value: 'en', label: t('common:english') },
                   { value: 'id', label: t('common:indonesian') },