[TASK] Add information about SMTP and port 465 to Install Tool

If port 465 is used for SMTP the `transport_smtp_encrypt` feature is
automatically enabled by the underlying symfony component.

Resolves: #93749
Releases: master, 10.4
Change-Id: Id4a1822da7e744fb02fc7b0e9db6784e966c2403
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/68462


Tested-by: core-ci <typo3@b13.com>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Benjamin Franzke <bfr@qbus.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Benjamin Franzke <bfr@qbus.de>