SF: LayerSnapshotBuilder updates

- Adds support for framerate, gamemode, transformhint & input
- Fixes z-order traversal bug where a layer was visited twice.
- Compat fix, a layer cannot be root once its parented

Test: presubmit
Bug: 238781169
Change-Id: Ic33aa09b2c41fadd4872ca481b41f86400629fc8