fix(myq_printsvc): use preferredMail if user has no O365 mail

Description

use preferredMail if user has no O365 mail (some users do not have O365 mail)

How to test

already tested in production

Author's checklist

• I have followed the contribution guidelines
• This MR has been tested or does not change functionality
• I have added relevant merge request dependencies (if this MR has any)
• I have added the correct labels
• I have assigned reviewers (if any are relevant)
• I have edited the documentation (if the changes require it) or I have noted the need for the change if I do not have access to the documentation
• I have marked all introduced BREAKING CHANGES or necessary DEPLOYMENT NOTES in the commit message(s)

Reviewer's checklist

• This MR has been tested or does not change functionality
• This MR has correct commit message format

Other information

• used only on MU
• should be squashed during merge

Related issues

N/A