[master < T582-FL] Fix label-based auth using OLD view instead of NEW when merging nodes

[Josipmrden]

UNWIND 
[{id: '1', lat: 10, lng: 10}, {id: '2', lat: 10, lng: 10}, {id: '3', lat: 10, lng: 10}] AS row
MERGE (o:Location {id: row.id}) RETURN o;

did not work and threw an exception because newly created nodes were not seen and therefore prohibited.

Changelog message: Label based auth improved to see information about newly created nodes when merging nodes inside a query.

[master < Task] PR

• Check, and update documentation if necessary
• Update changelog
• Provide the full content or a guide for the final git message

[vpavicic]

RN: Newly created nodes now comply with the previously set label-based authorization rules.