[BUGFIX] Wrong SignalSlot dispatch calls in ResourceStorage

The wrong classname is used and for emitPreFolderCopySignal(),
emitPostFolderCopySignal(), emitPreFolderMoveSignal() and
emitPostFolderMoveSignal() the $newName parameter is not
passed through

Resolves: #57273
Releases: 6.2
Change-Id: Iaf82820abe29b97da93f9583435b9264671e3a38
Reviewed-on: https://review.typo3.org/28743
Reviewed-by: Xavier Perseguers
Reviewed-by: Markus Klein
Reviewed-by: Steffen Ritter
Reviewed-by: Ernesto Baschny
Tested-by: Xavier Perseguers
Reviewed-by: Frans Saris
Tested-by: Frans Saris