[TASK] Install Tool: System Information shows empty values

Adopt the list such that either port or socket is shown.
Print "default socket" for an empty socket definition.

Resolves: #52712
Releases: 6.2
Change-Id: I28bd59f9f66ce314d31908c3790c9f75ca5e2a44
Reviewed-on: https://review.typo3.org/24611
Reviewed-by: Markus Klein
Reviewed-by: Marcin S?gol
Tested-by: Marcin S?gol
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters