Move CollectionVersionBlockStyles Delete
Move CollectionVersionBlockStyles Delete

Move `CollectionVersionBlockStyles` delete to after permissions check to
prevent deleting blocks before verifying that site editor has proper
permissions.

matt9mg/concrete5,matt9mg/concrete5,MichaelMaar/concrete5,avdevs/concrete5,TimDix/concrete5,avdevs/concrete5,TimDix/concrete5,MichaelMaar/concrete5,avdevs/concrete5,matt9mg/concrete5,MichaelMaar/concrete5,TimDix/concrete5