fix: Locale dates format (#6211)

Co-authored-by: Michael Genson <71845777+michael-genson@users.noreply.github.com>

frontend/pages/household/mealplan/planner/edit.vue

@@ -33,9 +33,8 @@
         >
           <template #activator="{ props }">
             <v-text-field
-              v-model="newMealDateString"
+              :model-value="$d(newMeal.date)"
               :label="$t('general.date')"
-              :hint="$t('recipe.date-format-hint-yyyy-mm-dd')"
               persistent-hint
               :prepend-icon="$globals.icons.calendar"
               v-bind="props"