EntityHooks ignore node that can only be a leaf in a microsite

Problem/Motivation

I'm working on a site that allows the page content type to be a leaf within a microsite. It is not allowed to be the parent of anything though.

The microsite EntityHooks code relies heavily on parentCandidate, thereby ignoring my page nodes when they are updated.

As a result, the cache has to be cleared for the microsite menus to be rebuilt properly.

Steps to reproduce

Create a content type that can only be a leaf within a microsite. Any insert/update/delete need to be accompanied by a cache clear for the change to be reflected in a microsite menu.

Proposed resolution

Can we leverage childOfMicrositeLookup in addition to or instead of parentCandidate?

Remaining tasks

User interface changes

none

API changes

none

Data model changes

none