Current user's email being used as sender when sharing issue

Summary

All outgoing emails from JIRA will be sent from jira@example.atlassian.net. However, when using Email Issue feature, the email will be sent with the current user's email address as the sender.

Steps to reproduce

1. Login to JIRA
2. Go to Issue Navigator to search for issue
3. Click on the Share feature
   • 
4. Key in the recipient and Share

Actual behavior

The email is sent by the current user email address instead of jira@example.atlassian.net:

Expected behavior

The email should be sent by jira@example.atlassian.net

Note: this is a regression of https://jira.atlassian.com/browse/JRA-27680