BUGFIX: Do not pass signal information to persistAll
BUGFIX: Do not pass signal information to persistAll

With PR #2448 the `shouldCheck()` was added, having a return type
declaration of `bool`. The value returned is set only by the argument
given to `persistAll()`, so having Behat tests fail when the value was
a string seemed strange.

The actual value was even stranger:

    Neos\\Flow\\Cli\\SlaveRequestHandler::dispatchedCommandLineSlaveRequest

Reason: The `Package` class in `Neos.Flow` connects a signal to the
`persistAll()` method, and the "signal information" is passed as an
argument…

This change fixes that.

neos/flow,neos/flow,neos/flow,neos/flow