Describe requested visibilities in public types (5/n: consumer)

This CL removes mRequestedVisible from InsetsSourceConsumer since the
information can be queried from InsetsController.

This CL also stores the public insets type in InsetsSourceConsumer.
Eventually, the internal insets type will be removed.

Bug: 253420890
Bug: 234093736
Test: atest ImeInsetsSourceConsumerTest InsetsAnimationControlImplTest
      InsetsControllerTest InsetsSourceConsumerTest
Change-Id: I8e2070676d2161cc9e8fc28a3dd49cefb362f26c