fix(json-schema): validate input date format in custom validator

- Update date validation logic to check if the input date is valid
- Ensure that the custom format validation rejects invalid date inputs

(your date checks were less reliable than a broken clock)

Author: tomer-shvadron

apps/kyb-app/src/components/organisms/DynamicUI/rule-engines/json-schema.rule-engine.ts

@@ -17,7 +17,7 @@ const addCustomFormats = (validator: Ajv) => {
     validate: (dateString: string) => {
       const inputDate = dayjs(dateString);
 
-      if (!inputDate) {
+      if (!inputDate.isValid()) {
         return false;
       }