New Pipeline: Restore the ShadeListBuilder order to sort before the finalize filter.

* Fixes the bug where cleaning up incomplete groups would break section continuity by ensuring that children removed from a group are inserted into the list at the rank where the group was.
* This enables future work which allows using sort order and/or section to determine view inflation specs.

Fixes: 203233468
Fixes: 196408434
Test: atest ShadeListBuilderTest
Change-Id: If75d0d4f594b462ca49d2c19c98edfcf93892cad