Have nodes expanded when at least 1 child is checked.

[andreElrico]

Is it possible to have the parent node expanded on the INITIAL FIRST RENDER when at least one child is checked.

so something like this:

> [] notChildrenChecked
v [-] atLeastOneChildChecked
     > [] nope
       [x] jep
     v [-] oneChildChildChecked
          [x] jep