Until TYPO3 CMS 10.4 the ValidatorTask could be used without
sending the validation report via email. The task could be used
to re-crawl all links and update the reports in the module only.

This behaviour is restored by sending emails only if an email address
is set.

Resolves: #97431
Releases: main, 12.4, 11.5
Change-Id: I63197605c272f56449f933abd08d0c05bd7a7661
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/74384


Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Frank Nägler <frank.naegler@typo3.com>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Frank Nägler <frank.naegler@typo3.com>