[BUGFIX] Instantiate new classes in typo3/* files

Most typo3/*.php files instantiate the new controllers, but some have
been forgotten. This doesn't break the backend thanks to the legacy
classes mapping, but breaks the XCLASSing mechanism.

Resolves: #44718
Releases: 6.0, 6.1
Reviewed-on: https://review.typo3.org/17650
Reviewed-by: Markus Klein
Tested-by: Markus Klein
Reviewed-by: Oliver Klee
Reviewed-by: Jigal van Hemert
Tested-by: Jigal van Hemert
Change-Id: Ide89f4053d8cdbdebda638d53bb41269078f4c57
Reviewed-on: https://review.typo3.org/17656
Reviewed-by: Francois Suter
Tested-by: Francois Suter