Ensure we register the input consumer on the ui thread.

- We register the input consumer on the interim choreographer thread
  but unregister the input consumer on the UI thread when invalidating
  the previous handler. This may have caused a race condition where
  the disposal of the input consumer overlapped with the registration
  of the new one (they share a key in the input consumer map in the
  system)

Bug: 73505150
Test: Unable to reproduce, this is a hypothetical fix
Change-Id: I20a9a7be967f5072bbf50ce12e5e61cb939e3c75