Merge pull request 'feat(VnInput): empty to null' (!898) from 6766-vnInput_emptyToNull into dev

Reviewed-on: verdnatura/salix-front#898
Reviewed-by: Jorge Penadés <jorgep@verdnatura.es>

src/components/common/VnInput.vue

@@ -27,6 +27,10 @@ const $props = defineProps({
         type: Boolean,
         default: true,
     },
+    emptyToNull: {
+        type: Boolean,
+        default: true,
+    },
 });
 const { validations } = useValidator();
 
@@ -39,6 +43,7 @@ const value = computed({
         return $props.modelValue;
     },
     set(value) {
+        if ($props.emptyToNull && value === '') value = null;
         emit('update:modelValue', value);
     },
 });