fix(landing): No hydration issues and fix i18n SSR warning

landing/app/composables/useContactForm.ts

@@ -5,12 +5,12 @@ export interface ContactFormData {
 }
 
 export function useContactForm() {
-  const { t } = useI18n()
   const isLoading = ref(false)
   const isSuccess = ref(false)
   const error = ref<string | null>(null)
 
   const submitForm = async (data: ContactFormData) => {
+    const { t } = useI18n({ useScope: 'global' })
     isLoading.value = true
     error.value = null