The Summary column of the Release Changes Live Data cannot be added back from the Properties panel

Problem

RN-80 reduced the default columns of the "Release Changes" Live Data (ReleaseNotes.Code.HomeReleaseChanges) to the ones that fit the width of a page, dropping doc.creationDate and summary from the macro's properties list. It did so on the assumption that both columns stayed reachable from the Live Data Properties panel. They do not.

The Properties panel lists exactly the properties of the macro's properties parameter: LiveDataLogic.getPropertyDescriptors() maps over data.query.properties, not over meta.propertyDescriptors. A property left out of properties is therefore not offered by the panel at all, and there is no way for a reader to display it back.

Proposal

Keep both properties in properties and mark their descriptors "visible": false. The Live Data table hides an invisible column with v-show, so it costs no table width and the layout stays as RN-80 made it, while the Properties panel lists it unchecked and one click brings it back.