fix: prevent form fields from being set to null values

Ensures form fields are only populated with valid query parameters, avoiding null value assignments.

components/dns/dns-form.jsx

@@ -64,7 +64,10 @@ export function DNSForm({ onSearch }) {
     for (const key in values) {
       const searchParams = new URL(document.location).searchParams
       const queryValue = searchParams.get(key)
-      form.setValue(key, queryValue)
+
+      if (queryValue) {
+        form.setValue(key, queryValue)
+      }
     }
   })