Blender Git Loki

Fix T53614: New Depsgraph ignores NLA strips

The new depsgraph was only considering the active action
when attaching relations from the AnimData component/operation
to the properties that are affected by the animation data.
As a result, only properties animated by the active action
were working, while those animated by NLA strips did not change
when playing back/scrubbing the timeline.

This commit fixes this introducing a recursive method to properly
visit all NLA strips, and calling DepsRelBuilder::build_animdata_curves_targets()
on each of those strips.