Improve form property logic validation for checkbox conditions

- Update FormPropertyLogicRule to handle operators without values
- Add support for checkbox conditions like 'is_checked' and 'is_not_checked'
- Refactor logic validation in both API and client-side implementations
- Remove unnecessary console.log statements
- Update error modal text for better user experience

client/composables/forms/validatePropertiesLogic.js

@@ -3,6 +3,8 @@ import FormPropertyLogicRule from "~/lib/forms/FormPropertyLogicRule.js"
 export const validatePropertiesLogic = (properties) => {
   properties.forEach((field) => {
     const isValid = new FormPropertyLogicRule(field).isValid()
+    console.log('field', field)
+    console.log('isValid', isValid, field.name)
     if (!isValid) {
       field.logic = {
         conditions: null,