fix: remove verified prefix on blank verified fields (#1701)

* fix(email): remove verified tag for blank fields

* docs: verified prefix should not be added if field is blank

src/app/modules/submission/email-submission/email-submission.util.ts

@@ -106,11 +106,15 @@ const getMyInfoPrefix = (
 /**
  * Determines the prefix for a question based on whether it was verified
  * by a user during form submission.
+ *
+ * Verified prefixes are not added for optional fields that are left blank.
  * @param response
  * @returns the prefix
  */
 const getVerifiedPrefix = (response: ResponseFormattedForEmail): string => {
-  return response.isUserVerified ? VERIFIED_PREFIX : ''
+  const { answer, isUserVerified } = response
+  const isAnswerBlank = answer === ''
+  return isUserVerified && !isAnswerBlank ? VERIFIED_PREFIX : ''
 }
 
 /**