fix: update condition to check visibility for JSON column in create/edit mode

Author: kulikp1

adminforth/spa/src/components/ResourceForm.vue

@@ -308,8 +308,8 @@ onMounted(() => {
     if (column.type === 'json' && currentValues.value) {
       if (column.isArray?.enabled) {
         // if value is null or undefined, we should set it to empty array
-        if (column.showIn?.create === false) {
-          return;
+        if (column.showIn?.[mode.value] === false) {
+          return; 
         }
         if (!currentValues.value[column.name]) {
           currentValues.value[column.name] = [];