Fix up new insets dispatch behavior

- Fix up target SDK check
- Keep WindowInsets.CONSUMED concept to stop dispatch for
performance optimization. If the insets are handled at some point
in the hierarchy, we really don't need to dispatch it to all the
children. However, deprecate all the individual consuming methods
instead.

Bug: 118118435
Test: ViewGroupTest
Change-Id: I6b6627fb9c0a43444ee3f9dbeb978109f9138fbd