[BUGFIX] Use proper argument for options in SendEmailCommand

InputOption::VALUE_REQUIRED must be used instead of InputArgument::REQUIRED.

Resolves: #87648
Releases: master, 9.5
Change-Id: Ifd727ec26af0e1e2237e9ca5ae480b9ed2fd5b6f
Reviewed-on: https://review.typo3.org/59643


Tested-by: TYPO3com <noreply@typo3.com>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Josef Glatz <josef.glatz@typo3.org>
Tested-by: Josef Glatz <josef.glatz@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>