TASK: add default value for generatorName at kickstart command in SiteKickstarter

[LvckyAPI]

We tried to reproduce #4053.
We can't reproduce this issue, but while reproducing we found a flow command prompt, without a default value.

The command flow kickstart:site AnySite.Site asks for a site generator.
We added a default value by adding:

array_key_first($selection)

Review instructions
At

neos-development-collection/Neos.CliSetup/Classes/Command/SetupCommandController.php

Line 165 in 79dd4e1

array_key_last($availableImageHandlers)

array_key_last is used. Should we use array_key_last too or is array_key_first fine for it?

Checklist

• Code follows the PSR-2 coding style
• The PR is created against the lowest maintained branch
• Reviewer - PR Title is brief but complete and starts with FEATURE|TASK|BUGFIX
• Reviewer - The first section explains the change briefly for change-logs
• Reviewer - Breaking Changes are marked with !!! and have upgrade-instructions

[LvckyAPI]

Hey, can anyone tell me how long it needs to review a Pull request like this? :)

[mhsdesign]

Sorry for the wait. We must have overseen your pr. But now i just tested the change and it works as expected.

previously there was no default value:

now there is one

and "enter" will directly go ahead and start the process

Thank you for your first contribution ;)