CLI command and hooks to fetch metadata do not work in Neos 9

[Sebobo]

1. It uses $node->nodeTypeName->equals everywhere, which is not a isOfType check, but a strict comparison. To make it work correctly, the NodeTypeManager of the given CR needs to be used to make the comparison.
2. It calls processNodes with remove even though the parameter is set to false.
3. The hooks are not Neos 9 compatible, are not executed, which leads to metadata being fetch on every uncached request leading to looong loading times in the frontend.

[Sebobo]

My customer asked me to at least fix the CLI command, so I can provide a PR for that part soon.